Get Safety and driver assist systems -> Remote park assist plus Guide for Audi RS E Tron Gt 4 Door First Generation (2021-2026)

FlexRay

LIN bus

The 12 ultrasonic sensors and the 4 overhead view cameras are read in directly by control unit J1121.

The park assist plus button (button for automated driving E888) is read in by control unit J1121 via a separate signal wire. To check

the plausibility of this signal, the control unit also receives the status of the button from onboard supply control unit J519 via the

vehicle bus system.

Reference

For further information on park assist plus, please refer to SSP 667 “Audi - new park assist systems 2020” (refer to

chapter “”).

Remote park assist plus

Introduction

The remote park assist plus is an enhanced version of the park assist plus. It has all the functions of the park assist plus and also

offers the following:

›

Additional option to control all parking maneuvers offered by the park assist plus via smartphone app from outside the vehicle.

The following additional scenarios for driving out of a parking space (unparking scenarios):

›

Remote-controlled unparking in reverse for parking spaces perpendicular to the road

Remote-controlled unparking forwards for parking spaces perpendicular to the road

These two additional unparking scenarios are only possible with remote control.

The two additional unparking scenarios

The two additional unparking scenarios assist the driver in situations where it is not possible to open the doors wide enough to get

into the vehicle easily due to a lack of space. In these situations, the remote park assist plus offers the option to drive the vehicle

far enough out of the space via remote control (forwards or in reverse) to allow the driver to get in comfortably.

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For remote-controlled forwards unparking for parking spaces perpendicular to the road, the driver can also choose whether the ve-

hicle should drive forwards to the left, in a straight line or to the right. During remote-controlled unparking in reverse with the

remote park assist plus, the vehicle always drives in a straight line. The driver determines how far the vehicle drives out of the park-

ing space by how long he/she holds the button.

Note

With the remote park assist plus, the driver remains fully responsible for the parking maneuvers, even though they

are controlled by the system.

The remote parking maneuver

Due to technical requirements and also for reasons of safety, certain specifications apply with regard to how far away from the

vehicle the driver may be standing when activating the vehicle’s drive system and during the subsequent parking maneuver.

The distance between the driver and the vehicle is determined via the vehicle key using the process that is familiar from the conven-

ience key system.

When activating the vehicle’s drive system

When activating the vehicle’s drive system to perform an unparking maneuver, the vehicle key must be no further than 3 metres

away from the vehicle. This is due to the exchange of immobiliser data between the vehicle and the vehicle key.

When performing the manoeuvre

During the subsequent maneuver, the driver must be no further than 6 metres away from the vehicle. If he/she exceeds this dis-

tance, the maneuver is interrupted.

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Interruption of a remote-controlled parking maneuver by the driver

To avoid interruptions to a parking maneuver that is being performed by the remote park assist plus, the driver must keep holding

the button on the smartphone’s screen throughout. If he/she takes his/her finger off the button, the parking maneuver is inter-

rupted and the vehicle is braked to a standstill. This allows the driver to stop the vehicle immediately at any time, just as he/she is

able to do by letting go of the button for the park assist plus E888 when sitting in the vehicle while a parking maneuver is being

performed. In both cases, the driver can resume the parking maneuver within approximately 45 seconds by pressing and holding

the button again.

For remote-controlled parking, there is a second way of interrupting a parking maneuver:

By pressing any button on the vehicle key.

This means that two separate options are available to interrupt the parking maneuver at any time in the event of a hazard.

Changing from control in the vehicle to remote control

If the driver starts a parking maneuver with the remote park assist plus while sitting in the vehicle, he/she can still exit the vehicle

and complete it from there. To do so, the parking maneuver must first be interrupted by releasing the button for the park assist

plus E888. The driver must then press the smartphone button on the MMI display, exit the vehicle and close the door. Provided that

he/she starts the myAudi app directly afterwards, the parking maneuver can be completed via remote control.

Reference

Before a vehicle can be parked remotely with the remote park assist plus, the myAudi app must be installed on the

user’s smartphone and an adaption procedure must have been carried out. The precise process will be explained in a

separate Service TV programme.

For further information on the Bluetooth Low Energy antennas, their fitting locations and the coupling process,

please refer to chapter (refer to chapter “Infotainment and Audi connect”) of this self-study programme.

Additional hardware for the remote park assist plus

Compared to the basic version, the remote park assist plus requires four additional hardware components in order to implement all

of its functions.

These are:

An additional antenna for the convenience key system:

›

Front antenna for entry and start authorization R376

Two additional antennas and a control unit for communication between the smartphone and the vehicle:

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›

antennas 3 and 4 for radio-controlled parking R361 and R362 and

Control unit for radio-controlled parking J1182

Front antenna for entry and start authorization R376

Vehicles with the remote park assist plus must also have the optional convenience key. This is required to locate the vehicle key

outside the vehicle and calculate its distance from the vehicle.

For the standard convenience key, which is only used for the keyless entry system, the vehicle key only needs to be identified in

certain areas outside the vehicle – not all the way around it. Four antennas are sufficient for this purpose. There is no need for an

additional antenna that covers the area in front of the vehicle if the park assist plus is not fitted.

If a vehicle is fitted with a remote control parking system, an additional antenna is required to cover the area in front of the vehicle.

The antenna that performs this task is front antenna for entry and start authorization R376. This additional entry and start

authorization antenna enables the distance between the vehicle key and the vehicle to be measured all the way around the vehicle.

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Control unit for radio-controlled parking J1182

To enable a parking maneuver to be controlled from outside the vehicle, data must be transmitted securely from the smartphone

to the master control unit J1121 in the vehicle, and vice versa. Outside the vehicle, data are transmitted wirelessly, while inside the

vehicle they are transmitted via the electrical signal wires of the vehicle bus system. Control unit for radio-controlled parking J1182

is the interface between wireless data transmission and data transmission via wires. The Audi e-tron GT is the first vehicle to be

fitted with this control unit.

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Control unit for radio-controlled parking J1182 sends data to and receives data from the smartphone via its two Bluetooth

antennas R361 and R362. Control unit J1182 sends data to and receives data from the master control unit for the new park

assist systems (driver assist systems control unit J1121) via CAN bus messages on the infotainment CAN.

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Electrical connections on control unit for radio-controlled parking J1182

Four electrical wires and two antenna wires are connected to control unit for radio-controlled parking:

›

Two power supply wires

Two infotainment CAN wires

Two screened antenna wires to antennas R361 and R362

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Key:

antenna 3 for radio-controlled parking

antenna 4 for radio-controlled parking

R361

R362

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Communication between the park assist systems and the smartphone

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Data are exchanged between the park assist systems integrated in control unit J1121 and the smartphone via various vehicle bus

systems and control units, as well as a Bluetooth connection.

1. The master control unit for the park assist systems (driver assist systems control unit J1121) communicates with data bus diag-

nostic interface J533 via FlexRay channels A and B.

2. Data bus diagnostic interface J533 communicates with control unit for radio-controlled parking J1182 via the infotainment CAN

bus.

3. Control unit for radio-controlled parking J1182 exchanges information with the smartphone via a specific type of Bluetooth con-

nection, a Bluetooth Low Energy connection.

Bluetooth Low Energy

Bluetooth Low Energy is a radio technology that can be used to network devices within a range of approximately 10 metres of each

other. Compared to standard Bluetooth, Bluetooth Low Energy consumes significantly less power and is also less expensive. Blue-

tooth Low Energy is also known as Bluetooth Smart or ultra low power Bluetooth. All three terms are simply different names for

the same technology.

Bluetooth Low Energy is suitable for wireless data transfer for remote-controlled parking because it meets the quiescent current

requirements specified by Audi and because the volume of data exchanged between the parking system and the smartphone is not

very high.

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Safety and driver assist systems -> Remote park assist plus for Your Audi RS E Tron Gt 4 Door First Generation (2021-2026)

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