2021-2026 Audi RS E Tron Gt 4 Door Electrics and electronics User Manual
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Electrics and electronics for Your Audi RS E Tron Gt 4 Door First Generation (2021-2026)

Electrics and electronics  
12 Volt power supply  
Lithium iron phosphate (LiFePO4) battery (40 Ah)  
General information and design  
The Audi e-tron GT is the first Audi model that is not fitted with a lead-acid battery. Instead, it has a lithium-ion battery which  
functions as a starter battery and as a power source for the 12-Volt low-voltage system. This battery is a lithium iron phosphate  
(LiFePO4) battery.  
General information on lithium iron phosphate batteries  
A lithium iron phosphate battery is a type of lithium-ion battery. The voltage of each cell is 3.3 V.  
The positive electrode is made of lithium iron phosphate (LiFePO4). The negative electrode is made of graphite with embedded lithi-  
um.  
General advantages compared to a lead-acid battery:  
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Lightweight construction  
Weight reduction of approx. 50 % compared to an AGM battery with the same capacity.  
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Increased recuperation capacity  
Less space required  
Volume of space required reduced by approx. 20% and battery monitor control unit J367 no longer required  
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Service life  
Service life 2.5 times as long; cycle stability 7 times as high  
Power supply stability  
Significantly higher voltage stability  
Lead ban  
Reaction to lead ban that is expected between 2021 and 2025  
Design of the 12 V LiFePO4 battery in the Audi e-tron GT  
The housing of the 12 V LiFePO4 battery contains the electronics which include a battery sensor that measures the voltage, current  
and temperature. The battery monitor control unit J367 that is integrated in the battery earth wire on other Audi models is not  
fitted on the Audi e-tron GT. Diagnosis and adaption of the battery are performed via the data bus diagnostic interface J533 (gate-  
way). The 12 V LiFePO4 battery is a LIN slave of J533. A relay is also integrated in the battery housing. It remains closed under  
normal conditions but can sever the connection between the battery cells and the positive battery terminal if required.  
684_195  
123  
Cell configuration  
The cells in the LiFePO4 battery of the Audi e‑tron GT are arranged in a 4S2P configuration. This means that 4 cell groups are con-  
nected in series, while each cell group consists of 2 cells that are connected in parallel.  
This results in the following:  
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›
Voltage = 4 x 3.3 V = 13.2 V  
Capacity = 2 x 20 Ah = 40 Ah  
684_412  
Battery operating range and special features of relay  
The nominal voltage of this battery is 13.2 V. When the state of charge is 80 %, the voltage is 13.4 V, while at a state of charge of  
100 % it is 13.8 V. The operating range of the battery is between 10 V and 14.8 V.  
Lithium-ion batteries are sensitive to overcharging and to deep discharge. Both must be avoided to protect the lithium-ion cells.  
After the relay has been opened, it closes again as soon as the state of charge returns to within the permitted limits.  
The relay is opened to protect the lithium-ion cells when the following occurs:  
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Overcharging (The relay is closed again as soon as the voltage remains within the range of 11 V < U < 14.8 V for approx. 30  
seconds. The relay makes an audible click when it closes. If the voltage was above 16 V, the relay can no longer be closed.)  
Deep discharge (deep discharge protection) (The relay is closed again as soon as the voltage remains within the range of  
11 V < U < 14.8 V for 10 to 30 seconds. There is an audible click. The battery should then be charged for at least 30 minutes.)  
Short circuit (Depending on the severity, the relay has been opened or the fuse has blown -> Faulty battery!)  
Overheating (The relay can no longer be closed -> Faulty battery!)  
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124  
684_245  
Fitting location  
The 12 V LiFePO4 battery is fitted in the front compartment. It is located on the right-hand side in left-hand-drive models and on  
the opposite side in right-hand-drive models. Wiring junction TV1 and the positive jump-start terminal are fitted on the 12 V bat-  
tery. The terminal on wiring junction TV1 is for connecting an external battery charger.  
Note  
The vehicle cannot be operated if the 12 V LiFePo4 battery is discharged. The Audi e-tron GT must NOT be used to  
jump-start other vehicles!  
125  
684_298  
External charging  
Like all other Audi models, the Audi e-tron GT depends on an intact power supply to the electrical system from the 12 V battery. As  
a result, if an Audi e-tron GT is in the showroom or in a workshop, an external battery charger needs to be connected. All battery  
chargers that are approved by Audi may be used to charge the battery in the Audi e-tron GT. Particularly when performing diagnos-  
tic work, it is important to use a charger that has a maximum charging current of at least 90 A.  
If the charger is too small, the 12 V battery could become so discharged during diagnostic work – or, in the worst case scenario,  
during a software update – that the internal relay is opened.  
Charging the battery while driving  
While driving, the 12 V LiFePO4 battery is supplied with power from the high-voltage battery via the voltage converter.  
A separate 50 mm2 aluminum wire (terminal 30 positive) leads to the positive battery terminal, then on to the battery and via a  
metal bridge to wiring junction TV1. TV1 is located directly on top of the 12 V battery. The positive jump-start terminal is also fit-  
ted here (12 V electrical system).  
684_247  
126  
Re-charging concept  
If the 12 V LiFePO4 battery is discharged while the vehicle is stationary, a specific re-charging concept is implemented under certain  
conditions.  
Example: The vehicle is stationary and has entered bus sleep mode. If the 12 V LiFePO4 battery is discharged so much that its usa-  
ble charge drops below 8 Ah and the state of charge of the high-voltage battery is higher than 10 %, the high-voltage network is  
activated and the 12 V battery is charged. This process continues until the 12 V battery has reached a capacity of 20 Ah or 30 mi-  
nutes have passed. The high-voltage network is then deactivated again and the vehicle enters bus sleep mode. This process can be  
repeated 8 times per terminal 15 cycle.  
Important  
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The high-voltage system of an Audi e-tron GT may be active even though the vehicle is parked and locked.  
684_250  
HV  
High-voltage  
SOC  
State of charge  
127  
Relay and fuse carriers  
Location of relay and fuse carriers  
684_261  
As shown in the illustration, the relay and fuse carriers are fitted in various locations on the Audi e-tron GT.  
The main fuse carrier is fitted on the LiFePO4 battery. The fuses inside it protect the electrical circuits for the components that use  
the most power, as well as the power supply lines of the other relay and fuse carriers in the vehicle. Additional relay and fuse carri-  
ers are located in the front compartment, on the A-pillars (both sides), on the dash panel (both sides) and in the luggage compart-  
ment (right-side).  
Fuse and relay carrier on A-pillar (driver’s side)  
684_431  
The relay and fuse carrier with the connection for an emergency power supply is a special component. It is fitted on the A-pillar on  
the driver’s side; in this illustration showing a left-hand drive vehicle, that means on the left A-pillar.  
Connection for emergency power supply TV73 is protected by a red cover. On the cover is a plus symbol and the outline of a vehicle  
with the hood open. Onboard supply control unit relay J722 is fitted to the left of it.  
128  
Emergency power supply  
Why an emergency power supply is necessary  
The 12 V battery is fitted in the vehicle’s front compartment. The hood of the Audi e-tron GT is unlocked via a button on the end  
face of the driver’s door. If the electrical system has no power (e.g. if the 12 V battery is discharged or faulty), it is not possible to  
unlock the hood. For this reason, a special procedure is required to establish an emergency power supply in order to open the hood  
and access the 12 V battery.  
Using the connection for emergency power supply  
If the electrical system of the Audi e-tron GT has no power, the driver’s door must first be unlocked manually using the emergency  
key. After opening the driver’s door, the relay and fuse carrier on the A-pillar must be exposed. The connection for emergency pow-  
er supply can then be pulled slightly out of the fuse carrier and connected to the positive terminal of the external power source. The  
negative terminal of the external power source must be connected to the striker of the driver’s door lock on the B-pillar. On vehicles  
with an anti-theft alarm system, the horn of the alarm system will sound after this is done. It can be switched off by pressing the  
main unlock button on the remote control key. The unlock button for the hood must then be pressed for at least 2 seconds in order  
to open the hood.  
This procedure is also described in the Owner's Manual.  
684_415  
Onboard supply control unit relay J722  
When the power supply for the electrical system is intact, convenience system central control unit J393 is supplied with power via  
main fuse carrier TV1. The power flows via contacts 4 and 3 of onboard supply control unit relay J722, which are bridged in the rest  
state.  
684_266  
When the electrical system is without power, an external power source can be connected to connection for emergency power sup-  
ply TV73. Doing so switches the relay. Convenience system central control unit J393 is now supplied with power by the external  
power source.  
129  
684_267  
Networking  
Data transmission, fitting locations and topology of control units  
Bus systems used on the Audi e-tron GT  
Bus systems  
Wire colour  
Method  
Data transfer rate  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
500 kbit/s  
10 Mbit/s  
Convenience CAN  
Convenience CAN 2  
Extended CAN  
Hybrid CAN  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Electrical bus system  
Fibre optic bus system  
Electrical single wire bus system  
Electrical bus system  
Dash panel insert CAN  
Infotainment CAN  
Connect CAN  
Diagnostics CAN  
Information electronics 1 CAN  
FlexRay  
MOST bus  
150 Mbit/s  
20 kbit/s  
LIN bus  
Sub-bus systems  
500 kbit/s  
1 Mbit/s  
Ethernet  
Electrical bus system  
100 Mbit/s  
Fitting locations and topology of control units  
Notes on illustrations  
The following illustrations are sorted according to the different bus systems on the Audi e-tron GT (type F8) and provide informa-  
tion on:  
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The location of the control unit in the vehicle  
The bus system via which the control unit participates in communication  
The control unit code  
The diagnostic address  
The power supply  
The bus termination resistor  
The following illustrations show all control units which may be connected to the various bus systems.  
Some control units are the result of optional or country-specific equipment.  
130  
The illustrations are intended as an overview of the fitting locations and the various data transmission paths between the control  
units. They do not show the exact fitting locations and do not provide any information about the routing of wiring or the nodes in  
the wiring harness. They are therefore not a substitute for the relevant current flow diagrams or Workshop Manuals. For illustra-  
tion purposes, the LIN slaves are allocated to the control unit and do not reflect the fitting location of the components. For the LIN  
slaves shown, several components are sometimes grouped together to ensure a reasonable degree of clarity in the illustrations. For  
example, in the area of the air conditioner control motors or the interior lighting modules, only one LIN participant is shown when  
in reality there is a chain of LIN slaves.  
A left-hand drive vehicle is shown in the illustration.  
684_122_4  
Convenience CAN  
684_122  
Key:  
J136  
Control unit for seat and steering column adjustment with memory function (under driver's seat)  
N475  
N476  
Valve block 1 in driver seat  
Valve block 2 in driver seat  
J223  
J386  
Rear spoiler adjustment control unit (in rear lid)  
Driver door control unit (in driver's door)  
J926  
Front passenger door control unit (in front passenger's door)  
J927 Rear passenger side door control unit  
Convenience system central control unit (on right in luggage compartment)  
Rear driver side door control unit  
J387  
J393  
G578  
H12  
Anti-theft alarm sensor  
Alarm horn  
J938  
MX3  
Rear lid power opening control unit  
Left tail light cluster  
131  
MX4  
Right tail light cluster  
Centre tail light cluster  
MX13  
J521  
J533  
J605  
Control unit for front passenger seat adjustment with memory function (under front passenger's seat)  
N477  
N478  
Valve block 1 in front passenger seat  
Valve block 2 in front passenger seat  
Data bus diagnostic interface (on centre tunnel)  
A
Battery  
J453  
Multifunction steering wheel control unit  
Rear lid control unit (in side panel on rear left)  
J519  
Onboard supply control unit  
The onboard supply control unit communicates via convenience CAN bus 2 (refer to illustration of con-  
venience CAN bus 2) but contains a low-ohm termination resistor for the convenience CAN bus and is  
therefore also shown in this illustration.  
Terminal 30 power supply  
Terminal 15 power supply  
120 ohms  
9200 ohms  
Convenience CAN 2  
684_126  
Key:  
J519  
Onboard supply control unit (on A-pillar, left-side; fitted in area of A-pillar, right-side, on right-hand drive vehi-  
cles)  
E1  
Light switch  
EX5  
Interior mirror  
G355  
G397  
J530  
J866  
MX1  
MX2  
V512  
V514  
V516  
V518  
Humidity sender  
Rain and light sensor  
Garage door operation control unit  
Control unit for electrically adjustable steering column  
Front left headlight  
Front right headlight  
Front left seat backrest fan 1  
Front left seat cushion fan 1  
Front right seat backrest fan 1  
Front right seat cushion fan 1  
132  
VX58  
WX3  
1-15  
Windscreen wiper  
Front roof module  
Interior lighting modules  
Interior lighting modules  
16-30  
J533  
J979  
Data bus diagnostic interface (on centre tunnel)  
Heater and air conditioning system control unit (fitted on left side of air conditioning unit)  
E87  
Operating and display unit for front air conditioning system  
Operating and display unit for rear air conditioning system  
Sunlight penetration photosensor  
E265  
G107  
G897  
G930  
G935  
J126  
1-16  
2-5  
Interior air quality sensor  
Air conditioner sensor for fine particle concentration  
External air quality and air humidity sensor  
Fresh air blower control unit  
Flap control motors on air conditioning unit (front)  
Flap control motors on air conditioning unit (rear)  
Terminal 30 power supply  
Terminal 15 power supply  
Power supply via J519  
Power supply via J979  
120 ohms  
1800 ohms  
9200 ohms  
Extended CAN  
684_127  
Key:  
Tire Pressure Monitoring System control unit (on rear subframe)  
Data bus diagnostic interface (on centre tunnel)  
J502  
J533  
J769  
J770  
J772  
J853  
Lane change assist control unit (under rear bumper cover, right-side)  
Lane change assist control unit 2 (under rear bumper cover, left-side)  
Reversing camera system control unit (in rear lid)  
Control unit for night vision system (in front luggage compartment, on front cross member, right-side)  
133  
J1167  
J1177  
Engine sound generator control unit 2 (in rear luggage compartment, left-side)  
Engine sound generator control unit 3 (in rear luggage compartment, right-side)  
Terminal 30 power supply  
Terminal 15 power supply  
66 ohms  
9200 ohms  
Note  
The next two illustrations are not realistic depictions of how the FlexRay control units are networked. Precisely how the  
individual branches of the FlexRay control units are connected together is shown subsequently in a separate illustra-  
tion.  
Control units which are connected both to FlexRay channel A and FlexRay channel B appear in both illustrations.  
FlexRay channel A  
684_128  
Key:  
J104  
J234  
J500  
J527  
J533  
J539  
J623  
ABS control unit (in front luggage compartment, centre left)  
Airbag control unit (on centre tunnel)  
Power steering control unit (in underbody on steering rack)  
Steering column electronics control unit (on steering column)  
Data bus diagnostic interface (on centre tunnel)  
Brake servo control unit (in front compartment, left-side)  
Motor control unit (in luggage compartment, rear left)  
VX65  
V552  
Gear actuator  
Gearbox auxiliary hydraulic pump  
J647  
J775  
Axle differential lock control unit (in rear luggage compartment, right-side)  
Running gear control unit (in rear luggage compartment, left-side)  
V66  
Adaptive suspension compressor motor  
J1019  
J1121  
Rear wheel steering control unit (on underbody, left-side)  
Driver assist systems control unit (on centre tunnel in front passenger's footwell, i.e. right footwell on left-hand  
drive vehicles and left footwell on right-hand drive vehicles)  
1-12  
Ultrasonic sensors  
134  
J1234  
J1235  
Electric drive control unit for front axle (on electric motor on front axle)  
Electric drive control unit for rear axle (on electric motor on rear axle)  
Terminal 30 power supply  
Terminal 15 power supply  
Power supply via J1121  
66 ohms  
120 ohms  
9200 ohms  
FlexRay - channel B  
684_129  
Key:  
J104  
J234  
ABS control unit (in front luggage compartment, centre left)  
Airbag control unit (on centre tunnel)  
J706  
J854  
J855  
Seat occupied recognition control unit  
Control unit for front left belt tensioner  
Control unit for front right belt tensioner  
J428  
Adaptive cruise control unit (on front bumper cross member)  
J533  
Data bus diagnostic interface (on centre tunnel)  
J769  
Lane change assist control unit (under rear bumper cover, right-side)  
Lane change assist control unit 2 (under rear bumper cover, left-side)  
Front left radar sensor control unit for object detection (under front bumper cover, left-side)  
Front right radar sensor control unit for object detection (under front bumper cover, right-side)  
J770  
J1088  
J1089  
J1121  
Driver assist systems control unit (on centre tunnel in front passenger's footwell, i.e. right footwell on left-hand  
drive vehicles and left footwell on right-hand drive vehicles)  
Terminal 30 power supply  
Terminal 15 power supply  
66 ohms  
9200 ohms  
135  
Topology of FlexRay control units  
684_130  
Key:  
J104  
J234  
J428  
J500  
J527  
J533  
J539  
J623  
J647  
J769  
J770  
J775  
J1019  
J1088  
J1089  
J1121  
J1234  
J1235  
ABS control unit  
Airbag control unit  
Adaptive cruise control unit  
Power steering control unit  
Steering column electronics control unit  
Data bus diagnostic interface  
Brake servo control unit  
Motor control unit  
Axle differential lock control unit  
Lane change assist control unit  
Lane change assist control unit 2  
Running gear control unit  
Rear wheel steering control unit  
Front left radar sensor control unit for object detection  
Front right radar sensor control unit for object detection  
Driver assist systems control unit  
Electric drive control unit for front axle  
Electric drive control unit for rear axle  
136  
Hybrid CAN  
684_131  
Key:  
A48  
AX4  
Voltage converter for 800 V, 400 V, 48 V, 12 V (on electric motor on front axle)  
Charging unit 1 for high-voltage battery (on electric motor on front axle)  
EX32  
EX40  
Module for battery charge selector buttons  
Module 2 for battery charge selector buttons  
J533  
J840  
J1024  
Data bus diagnostic interface (on centre tunnel)  
Battery regulation control unit (on electric motor on front axle)  
Thermal management control unit (on A-pillar, left-side; fitted in area of A-pillar, right-side, on right-hand drive  
vehicles)  
G395  
G826  
G827  
J671  
Refrigerant pressure and temperature sender  
Refrigerant pressure and temperature sender 2  
Refrigerant pressure and temperature sender 3  
Radiator fan control unit 2  
N632  
N633  
N637  
N638  
N640  
N641  
N643  
V470  
V544  
V550  
V650  
V651  
V653  
V656  
VX57  
Z189  
Coolant changeover valve 1  
Coolant changeover valve 2  
Refrigerant expansion valve 2  
Refrigerant expansion valve 3  
Refrigerant shut-off valve 2  
Refrigerant shut-off valve 3  
Refrigerant shut-off valve 5  
Electrical air conditioner compressor  
Radiator blind control motor  
Radiator blind control motor 2  
Changeover and mixing valve for thermal management  
Changeover and mixing valve 2 for thermal management  
Changeover and mixing valve 4 for thermal management  
Changeover and mixing valve 7 for thermal management  
Radiator fan  
High-voltage heater (PTC)  
J1178  
J1234  
J1235  
Power contactor with boost function (on electric motor on front axle)  
Electric drive control unit for front axle (on electric motor on front axle)  
Electric drive control unit for rear axle (on electric motor on rear axle)  
137  
Terminal 30 power supply  
Power supply via J1024  
120 ohms  
9200 ohms  
Dash panel insert CAN  
684_132  
Key:  
J285  
J533  
J587  
J898  
Control unit in dash panel insert (in dash panel on driver's side)  
Data bus diagnostic interface (on centre tunnel)  
Selector lever sensors control unit (in centre console)  
Control unit for head-up display (in dash panel on driver's side)  
Terminal 30 power supply  
120 ohms  
9200 ohms  
138  
Infotainment CAN/connect CAN/Information electronics 1 CAN  
684_133  
Key:  
J533  
J794  
Data bus diagnostic interface (on centre tunnel)  
Control unit 1 for information electronics (in dash panel near centre console)  
E67  
Driver side volume regulator  
MMI display  
J685  
J1146  
Charging unit 1 for mobile devices  
J949  
Emergency call module control unit and communication unit (on centre tunnel)  
Control unit for radio-controlled parking  
J1182  
Terminal 30 power supply  
66 ohms  
120 ohms  
9200 ohms  
139  
Diagnostics CAN/Ethernet  
684_134  
Key:  
J533  
J794  
J898  
J949  
U31  
Data bus diagnostic interface (on centre tunnel)  
Control unit 1 for information electronics (in dash panel near centre console)  
Control unit for head-up display (in dash panel on driver's side)  
Emergency call module control unit and communication unit (on roof module)  
Diagnostic connection  
Terminal 30 power supply  
66 ohms  
Control units  
Data bus diagnostic interface J533 (gateway)  
Data bus diagnostic interface J533 (gateway) is one of the main control units on the Audi e-tron GT, as it is on other models. As it is  
a network system gateway, it is connected to all bus systems except for the information electronics CAN and the MOST bus. It is  
fitted on the centre tunnel.  
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Diagnostic address  
0019  
Tasks of data bus diagnostic interface J533  
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Network system gateway  
Controller for FlexRay bus  
Energy manager for low-voltage system and high-voltage system  
High-voltage coordinator  
Diagnostic master  
Interface for various connect services  
Manages diagnostics firewall  
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LIN master for  
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A - Battery (12 V)  
J453 - Multifunction steering wheel control unit  
140  
684_297  
Onboard supply control unit J519  
Onboard supply control unit J519 is another important control unit on the Audi e-tron GT. It is fitted on the A-pillar on the driver’s  
side.  
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Diagnostic address  
0009  
Tasks of onboard supply control unit J519  
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Exterior lighting master  
Interior lighting master  
Diagnostic gateway for the lighting control units  
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Data bus connections  
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Convenience CAN 2  
Sub-bus connection to lighting control units and to driver assist systems control unit J1121  
Connection to convenience CAN (contains a 120-ohm termination resistor)  
LIN master for  
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A27 - Output module 1 for right LED headlight  
A31 - Output module 1 for left LED headlight  
E1 - Light switch  
EX35 - Centre switch module 2 in dash panel  
G355 - Humidity sender  
G397 - Rain and light sensor  
J400 - Wiper motor control unit  
J528 - Roof electronics control unit  
J530 - Garage door operation control unit  
J866 - Control unit for electrically adjustable steering column  
V388 - Driver seat backrest fan  
V389 - Front passenger seat backrest fan  
V390 - Driver seat cushion fan  
V391 - Front passenger seat cushion fan  
Y7 - Automatic anti-dazzle interior mirror  
Interior lighting modules  
141  
684_263  
Terminal control  
The terminal control on the Audi e-tron GT corresponds to that on the Porsche Taycan. As a result, there are differences to  
Audi vehicles which are fully based on the MLBevo2 electrics platform.  
The terminals in question are S, 15 and 50. The Audi e-tron GT is the first Audi vehicle with automatic control of terminal 15.  
In certain circumstances, terminal 15 may be switched on without the driver actively pressing entry and start authorization  
button E408.  
Meaning of individual terminals:  
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›
›
Terminal S = key contact; originally switched by inserting ignition key  
Terminal 15 = ignition ON = ready for operation; also referred to as “switched positive”  
Terminal 50 = start motor = drive system active  
Schematic diagram on activation of terminal control  
142  
684_233  
Schematic diagram on deactivation of terminal control  
Various scenarios can also be used to deactivate the individual terminals. At the end, the individual terminals 50, 15 and S are off.  
143  
684_234  
Exit concept on the Audi e-tron GT (type F8)  
As on other models, the main role of the exit concept on the Audi e-tron GT is to prevent the vehicle from accidentally rolling away  
according to the operating status. On the Audi e-tron GT, the exit concept differentiates between two situations:  
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Driver is temporarily absent  
Driver is absent for an extended period  
144  
684_235  
145  
684_236  
Exterior lighting  
Headlights  
Headlight versions  
The following headlight versions are available for the Audi e-tron GT:  
[6]  
[7]  
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LED headlights, PR number: 8IY + 8G0/8G1/8G9 + AV1 (ECE and SAE  
[6]  
)
Matrix LED headlights, PR number: 8IY + 8G4 (ECE  
)
[6]  
[7]  
Matrix LED headlights with laser main beam, PR number: 8IZ + 8G4 (ECE and SAE  
)
PR number key:  
8G0  
8G1  
8G4  
8G9  
Without light assist system  
Main beam assist  
Matrix beam  
Light assist system pre-installation for functions on demand (FOD)  
[6] ECE = for the European market  
[7] SAE = for the North American market  
146  
8IY  
8IZ  
LED headlights with lens  
LED headlights with variable light distribution and additional laser main beam  
General description  
All headlight versions of the Audi e-tron GT use LEDs or laser diodes. The headlights are connected to the vehicle body by adjuster  
elements. This allows the headlights to be aligned exactly with the other parts of the body. Before the headlights can be removed,  
the bumper cover has to be detached. In the event of damage to the headlight attachments, repair tabs can be attached to the  
headlight housing.  
LED headlights and matrix LED headlights  
These two versions are physically identical and differ only in terms of how they are controlled. This means that LED headlights can  
be upgraded to matrix LED headlights with functions on demand (FOD). A software update purchased by the customer changes how  
the LEDs are controlled and activates the matrix beam function.  
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LED headlights  
Lighting functions  
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Daytime running lights  
Marker lights  
Dipped beam  
Main beam  
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All-weather lights  
Turn signal  
[7]  
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Side marker lights (SAE only)  
Special features of the lighting functions  
[6]  
[7]  
On the ECE version, the marker lights/daytime running lights are switched off when the turn signal is on. On the SAE version, a  
distinction is made between “signalling by day” and “signalling by night”. When “signalling by day” the marker lights/daytime run-  
ning lights are switched off and when “signalling by night” the daytime running lights are dimmed to marker light level.  
Regardless of market, the all-weather lights are deactivated when the headlight flasher/main beams are activated.  
Adjusting headlights for driving on other side of road  
It is not necessary to adjust the headlights. The legal requirements are met without additional measures.  
When driving on motorways, the dipped beam headlights setting should be selected at the light switch. This stops the light level  
from being raised by the headlight range control and thereby prevents you from dazzling oncoming road users.  
Equipment  
The LED headlights can be combined with the main beam assist as an option.  
Headlight range control  
The LED headlights are equipped with automatic dynamic headlight range control.  
Matrix LED headlights  
Lighting functions  
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Daytime running lights  
Marker lights  
Dipped beam  
Matrix beam main beam  
Dynamic turn signal  
All-weather lights  
Static turning light  
Intersection light (in combination with navigation system)  
Motorway light  
Static cornering light  
[7]  
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Side marker lights (SAE only  
, not illustrated)  
Special features of the lighting functions  
[6]  
[6]  
On the ECE version, the marker lights/daytime running lights are switched off when the turn signal is on. On the SAE version, a  
distinction is made between “signalling by day” and “signalling by night”. When “signalling by day” the marker lights/daytime run-  
ning lights are switched off, while when “signalling by night” the daytime running lights are dimmed to marker light level.  
Regardless of market, the all-weather lights are deactivated when the headlight flasher/main beams are activated.  
Adjusting headlights for driving on other side of road  
It is not necessary to adjust the headlights. The legal requirements are met without additional measures.  
When driving on motorways, the dipped beam headlights setting should be selected at the light switch. This stops the light level  
from being raised by the headlight range control and thereby prevents you from dazzling oncoming road users.  
Headlight range control  
The matrix LED headlights are equipped with automatic dynamic headlight range control.  
[7] SAE = for the North American market  
[6] ECE = for the European market  
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LED headlights and matrix LED headlights  
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Service  
The parts marked with “service” in the exploded view of the headlight can be replaced individually in the event of damage. In addi-  
tion, the housing cover with seal, the seal on the top and outside of the headlight sealing disc, adjuster screws, body adjuster ele-  
ments and securing bolts are available as replacement parts. In the event of damage to the upper and inner headlight attach-  
ments, repair tabs can be attached to the headlight housing. They are listed as a repair kit in the Electronic parts catalogue (ETKA).  
It is very important to keep the inside of the headlight as clean as possible when renewing components in the inside of the head-  
light. It is also recommended to use the ESD workplace VAS 6613 to prevent electrostatic discharge.  
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Matrix LED headlights with laser main beam  
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Lighting functions  
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›
›
›
›
›
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Daytime running lights  
Marker lights  
Dipped beam  
Matrix beam main beam  
Additional laser main beam  
Dynamic turn signals  
All-weather lights  
[6]  
[7]  
›
›
›
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Background light; blue on ECE version, white on SAE version  
Static turning light  
Intersection light (in combination with navigation system)  
Motorway light  
Dynamic cornering light  
[7]  
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Side marker lights (SAE only  
, not illustrated)  
Special features of the lighting functions  
[6] ECE = for the European market  
[7] SAE = for the North American market  
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[6]  
The background light is operated together with the marker lights/daytime running lights. On the ECE version, the marker lights/  
[7]  
daytime running lights and the background light are switched off when the turn signal is on. On the SAE version, the daytime  
running lights are dimmed to marker light level when the turn signal is on but are undimmed again during the turn signal’s dark  
phase. Regardless of market, the all-weather lights are deactivated when the headlight flasher/main beams are activated.  
Adjusting headlights for driving on other side of road  
It is not necessary to adjust the headlights. The legal requirements are met without additional measures.  
When driving on motorways, the dipped beam headlights setting should be selected at the light switch. This stops the light level  
from being raised by the headlight range control and thereby prevents you from dazzling oncoming road users.  
Headlight range control  
The matrix LED headlights with laser main beam are equipped with automatic dynamic headlight range control.  
Headlight  
684_258  
Service  
The parts marked with “service” in the exploded view of the headlight can be replaced individually in the event of damage. In addi-  
tion, the housing cover with seal, the seal on the top and outside of the headlight sealing disc, adjuster screws, body adjuster ele-  
ments and securing bolts are available as replacement parts. In the event of damage to the headlight attachments, repair tabs can  
be attached to the headlight housing. They are listed as a repair kit in the Electronic parts catalogue (ETKA).  
It is very important to keep the inside of the headlight as clean as possible when renewing components in the inside of the head-  
light. It is also recommended to use the ESD workplace VAS 6613 to prevent electrostatic discharge.  
Service/adjustment and calibration (applies to all headlight versions on the Audi e-tron GT)  
As on all headlights in Audi vehicles, the dipped beams are adjusted using two adjuster screws. However, the matrix beam main  
beams on the Audi e-tron GT are not calibrated by measuring a reference segment. On the headlights of the Audi e-tron GT, the  
inflection point of the dipped beam is measured. These values are entered in the test program of the diagnostic tester and the  
correction value for the matrix beam main beams is calculated.  
[6] ECE = for the European market  
[7] SAE = for the North American market  
151  
Note  
The headlight versions available vary from market to market. This is not the topic of the descriptions on this page.  
A new light switch and thereby a new operating concept was introduced with the Audi A8 (type 4N). This concept is  
also used for the Audi e-tron GT. The operating concept allows, for example, the dipped beam headlights and the day-  
time running lights to be switched off at speeds below 10 km/h. If this speed is exceeded, the light switch changes to  
the “AUTO” position. Furthermore, the light switch is always in the “AUTO” position after the ignition has been switch-  
ed off and on again, regardless of what was selected prior to the ignition being switched off.  
Tail lights  
Tail light versions  
The following tail light versions are available for the Audi e-tron GT:  
[6]  
[7]  
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Tail lights, PR number: 8VM (ECE and SAE  
)
[6]  
[7]  
Tail lights, PR number: 8VM + 8VP (ECE and SAE  
)
PR number key:  
8VM  
8VP  
LED tail lights with dynamic turn signals  
LED tail lights with animated lighting functions  
The tail lights on the Audi e-tron GT are in three sections; one tail light each on the left and right sides and a light unit which covers  
the entire width of the boot lid. Only LED lights are used. The tail lights and the high-level brake light are activated by convenience  
system central control unit J393.  
[6] ECE = for the European market  
[7] SAE = for the North American market  
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