When trouble arises -> Engine start / Shift lever / Key / Stuck for Your Toyota Aygo SUV Second Generation (2015-2021)

454  
8-2. Steps to take in an emergency  
If the engine will not start  
If the engine will not start even though correct starting proce-  
dures are being followed (P. 180, 183), consider each of the fol-  
lowing points:  
The engine will not start even though the starter motor operates  
normally.  
One of the following may be the cause of the problem:  
There may not be sufficient fuel in the vehicle’s tank.  
Refuel the vehicle.  
The engine may be flooded.  
Try to restart the engine again following correct starting procedures.  
(P. 180, 183)  
There may be a malfunction in the engine immobilizer system.  
(P. 75)  
The starter motor turns over slowly, the interior lights and head-  
lights are dim, or the horn does not sound or sounds at a low  
volume.  
One of the following may be the cause of the problem:  
The battery may be discharged. (P. 460)  
The battery terminal connections may be loose or corroded.  
The starter motor does not turn over (vehicles with a smart entry  
& start system).  
The engine starting system may be malfunctioning due to an electrical  
problem such as an open circuit or a blown fuse. However, an interim  
measure is available to start the engine. (P. 455)  
 
455  
8-2. Steps to take in an emergency  
The starter motor does not turn over, the interior lights and head-  
lights do not turn on, or the horn does not sound.  
One of the following may be the cause of the problem:  
One or both of the battery terminals may be disconnected.  
The battery may be discharged. (P. 460)  
There may be a malfunction in the steering lock system (vehicles  
with a smart entry & start system).  
Contact any authorized Toyota retailer or Toyota authorized repairer, or any  
reliable repairer if the problem cannot be repaired, or if repair procedures  
are unknown.  
Emergency start function  
When the engine does not start, the following steps can be used as an  
interim measure to start the engine if the engine switch is functioning  
normally:  
Set the parking brake.  
Shift the shift lever to N.  
Turn the engine switch to ACCESSORY mode.  
Press and hold the engine switch for about 15 seconds while  
depressing the brake pedal (multi-mode manual transmission) or  
clutch pedal (manual transmission) firmly.  
Even if the engine can be started using the above steps, the system  
may be malfunctioning. Have the vehicle inspected by any authorized  
Toyota retailer or Toyota authorized repairer, or any reliable repairer.  
8
 
456  
8-2. Steps to take in an emergency  
If the shift lever cannot be shifted (vehicles  
with a multi-mode manual transmission)  
If the shift lever cannot be shifted with your foot on the brake  
pedal, there may be a problem with the shift lock system (a sys-  
tem to prevent accidental operation of the shift lever). Have the  
vehicle inspected by any authorized Toyota retailer or Toyota  
authorized repairer, or any reliable repairer immediately.  
Also, when the vehicle’s battery is discharged, the shift lever  
cannot be operated.  
Charging the battery  
P. 460  
 
457  
8-2. Steps to take in an emergency  
If the electronic key does not operate properly  
(vehicles with a smart entry & start system)  
If communication between the electronic key and vehicle is  
interrupted (P. 130) or the electronic key cannot be used  
because the battery is depleted, the smart entry & start system  
and wireless remote control cannot be used. In such cases, the  
doors can be opened and the engine can be started by following  
the procedure below.  
Locking and unlocking the doors  
Use the mechanical key (P. 110)  
in order to perform the following  
operations:  
1
Locks all the doors  
2
Unlocks all the doors  
8
 
458  
8-2. Steps to take in an emergency  
Starting the engine  
Ensure that the shift lever is in N and depress the brake pedal  
(multi-mode manual transmission) or clutch pedal (manual trans-  
mission).  
Touch the corner of the elec-  
tronic key with the indicator to  
the engine switch.  
When the electronic key is  
detected, a buzzer sounds and the  
engine switch will turn to IGNITION  
ON mode.  
When the smart entry & start sys-  
tem is deactivated in customization  
setting, the engine switch will turn  
to ACCESSORY mode.  
Firmly depress the brake pedal (multi-mode manual transmission)  
or clutch pedal (manual transmission) and check that smart entry &  
start system indicator light (green) turns on.  
Press the engine switch.  
In the event that the engine still cannot be started, contact any autho-  
rized Toyota retailer or Toyota authorized repairer, or any reliable  
repairer.  
 
459  
8-2. Steps to take in an emergency  
Stopping the engine  
Shift the shift lever to N and press the engine switch as you normally do when  
stopping the engine.  
Replacing the key battery  
As the above procedure is a temporary measure, it is recommended that the  
electronic key battery be replaced immediately when the battery is depleted.  
(P. 381)  
Changing engine switch modes  
Release the brake pedal (multi-mode manual transmission) or clutch pedal  
(manual transmission) and press the engine switch in step  
above.  
The engine does not start and modes will be changed each time the switch is  
pressed. (P. 185)  
When the electronic key does not work properly  
Make sure that the smart entry & start system has not been deactivated in  
the customization setting. If it is off, turn the function on.  
(Customizable features: P. 483)  
Check if battery-saving mode is set. If it is set, cancel the function.  
(P. 130)  
8
 
460  
8-2. Steps to take in an emergency  
If the vehicle battery is discharged  
The following procedures may be used to start the engine if the  
vehicle’s battery is discharged.  
You can also call any authorized Toyota retailer or Toyota autho-  
rized repairer, or any reliable repairer.  
If you have a set of jumper (or booster) cables and a second vehicle  
with a 12-volt battery, you can jump start your vehicle by following the  
steps below.  
Open the hood. (P. 356)  
Connect the jumper cables according to the following procedure:  
1
Connect a positive jumper cable clamp to the positive (+) battery  
terminal on your vehicle.  
2
Connect the clamp on the other end of the positive cable to the  
positive (+) battery terminal on the second vehicle.  
3
Connect a negative cable clamp to the negative (-) battery termi-  
nal on the second vehicle.  
4
Connect the clamp at the other end of the negative cable to a  
solid, stationary, unpainted metallic point away from the battery  
and any moving parts, as shown in the illustration.  
 
461  
8-2. Steps to take in an emergency  
Start the engine of the second vehicle. Increase the engine speed  
slightly and maintain at that level for approximately 5 minutes to  
recharge the battery of your vehicle.  
Vehicles with a smart entry & start system only: Open and close  
any of the doors of your vehicle with the engine switch off.  
Vehicles without a smart entry & start system:  
Maintain the engine speed of the second vehicle and start the  
engine of your vehicle.  
Vehicles with a smart entry & start system:  
Maintain the engine speed of the second vehicle and start the  
engine of your vehicle by turning the engine switch to IGNITION  
ON mode.  
Once the vehicle’s engine has started, remove the jumper cables in  
the exact reverse order from which they were connected.  
Once the engine starts, have the vehicle inspected at any authorized  
Toyota retailer or Toyota authorized repairer, or any reliable repairer  
as soon as possible.  
To prevent battery discharge  
Turn off the headlights and the audio system while the engine is off.  
Turn off any unnecessary electrical components when the vehicle is running  
at a low speed for an extended period, such as in heavy traffic.  
Charging the battery  
The electricity stored in the battery will discharge gradually even when the  
vehicle is not in use, due to natural discharge and the draining effects of cer-  
tain electrical appliances. If the vehicle is left for a long time, the battery may  
discharge, and the engine may be unable to start. (The battery recharges  
automatically during driving.)  
8
 
462  
8-2. Steps to take in an emergency  
Precautions when the battery is discharged (vehicles with a smart entry  
& start system)  
In some cases, it may not be possible to unlock the doors using the smart  
entry & start system when the battery is discharged. Use the wireless  
remote control or the mechanical key to lock or unlock the doors.  
The engine may not start on the first attempt after the battery has recharged  
but will start normally after the second attempt. This is not a malfunction.  
The engine switch mode is memorized by the vehicle. When the battery is  
reconnected, the system will return to the mode it was in before the battery  
was discharged. Before disconnecting the battery, turn the engine switch off.  
If you are unsure what mode the engine switch was in before the battery dis-  
charged, be especially careful when reconnecting the battery.  
When replacing the battery  
Use a battery that conforms to European regulations.  
Use a battery with the same case size as the previous one;  
vehicles without cold area specifications or a stop & start system: (LN0),  
20 hours rate capacity (20HR) is equivalent (35Ah) or greater, and perfor-  
mance rating (CCA) is equivalent (300A) or greater;  
vehicles with cold area specifications: (LN0), 20 hours rate capacity (20HR)  
is equivalent (42Ah) or greater, and performance rating (CCA) is equivalent  
(390A) or greater; or  
vehicles with a stop & start system: (LN2), 20 hours rate capacity (20HR) is  
equivalent (60Ah) or greater, and performance rating (CCA) is equivalent  
(540A) or greater.  
ꢀ If the sizes differ, the battery cannot be properly secured.  
ꢀ If the 20 hour rate capacity is low, even if the time period where the vehi-  
cle is not used is a short time, the battery may discharge and the engine  
may not be able to start.  
For details, consult any authorized Toyota retailer or Toyota authorized  
repairer, or any reliable repairer.  
 
463  
8-2. Steps to take in an emergency  
WARNING  
Avoiding battery fires or explosions  
Observe the following precautions to prevent accidentally igniting the flam-  
mable gas that may be emitted from the battery:  
Make sure each jumper cable is connected to the correct terminal and that  
it is not unintentionally in contact with any other than the intended terminal.  
Do not allow the other end of the jumper cable connected to the “+” termi-  
nal to come into contact with any other parts or metal surfaces in the area,  
such as brackets or unpainted metal.  
Do not allow the + and - clamps of the jumper cables to come into contact  
with each other.  
Do not smoke, use matches, cigarette lighters or allow open flame near  
the battery.  
Battery precautions  
The battery contains poisonous and corrosive acidic electrolyte, while  
related parts contain lead and lead compounds. Observe the following pre-  
cautions when handling the battery:  
When working with the battery, always wear safety glasses and take care  
not to allow any battery fluids (acid) to come into contact with skin, clothing  
or the vehicle body.  
Do not lean over the battery.  
In the event that battery fluid comes into contact with the skin or eyes,  
immediately wash the affected area with water and seek medical attention.  
Place a wet sponge or cloth over the affected area until medical attention  
can be received.  
Always wash your hands after handling the battery support, terminals, and  
other battery-related parts.  
Do not allow children near the battery.  
To prevent damage to the vehicle  
8
Do not pull- or push-start the vehicle as the three-way catalytic converter  
may overheat and become a fire hazard.  
NOTICE  
When handling jumper cables  
When connecting the jumper cables, ensure that they do not become entan-  
gled in the cooling fan or engine drive belt.  
 
464  
8-2. Steps to take in an emergency  
If your vehicle overheats  
The following may indicate that your vehicle is overheating.  
The high engine coolant temperature warning light (P. 416) comes  
on or flashes, or a loss of engine power is experienced. (For exam-  
ple, the vehicle speed does not increase.)  
Steam comes out from under the hood.  
Correction procedures  
Stop the vehicle in a safe place and turn off the air conditioning sys-  
tem, and then stop the engine.  
If you see steam:  
Carefully lift the hood after the steam subsides.  
If you do not see steam:  
Carefully lift the hood.  
After the engine has cooled  
down sufficiently, inspect the  
hoses and radiator core (radia-  
tor) for any leaks.  
1
Radiator  
2
Cooling fan  
If a large amount of coolant  
leaks, immediately contact any  
authorized Toyota retailer or  
Toyota authorized repairer, or  
any reliable repairer.  
 
465  
8-2. Steps to take in an emergency  
The coolant level is satisfactory if it is between the “FULL” or “F”  
and “LOW” lines on the reservoir.  
Type A  
Type B  
1
2
3
4
Radiator cap  
Reservoir  
“FULL” or “F”  
“LOW”  
Add coolant if necessary.  
Water can be used in an emer-  
gency if coolant is unavailable.  
Start the engine and turn the air conditioning system on to check  
that the radiator cooling fan operate and to check for coolant leaks  
from the radiator or hoses.  
8
The fan operate when the air conditioning system is turned on immediately  
after a cold start. Confirm that the fan is operating by checking the fan  
sound and air flow. If it is difficult to check these, turn the air conditioning  
system on and off repeatedly. (The fan may not operate in freezing tem-  
peratures.)  
 
466  
8-2. Steps to take in an emergency  
If the fan is not operating:  
Stop the engine immediately and contact any authorized Toyota  
retailer or Toyota authorized repairer, or any reliable repairer.  
If the fan is operating:  
Have the vehicle inspected at the nearest any authorized Toyota  
retailer or Toyota authorized repairer, or any reliable repairer.  
WARNING  
When inspecting under the hood of your vehicle  
Observe the following precautions.  
Failure to do so may result in serious injury such as burns.  
If steam is seen coming from under the hood, do not open the hood until  
the steam has subsided. The engine compartment may be very hot.  
Keep hands and clothing (especially a tie, a scarf or a muffler) away from  
the fan and belts. Failure to do so may cause the hands or clothing to be  
caught, resulting in serious injury.  
Do not loosen the radiator cap while the engine and radiator are hot. High  
temperature steam or coolant could spray out.  
NOTICE  
When adding engine coolant  
Add coolant slowly after the engine has cooled down sufficiently. Adding  
cool coolant to a hot engine too quickly can cause damage to the engine.  
To prevent damage to the cooling system  
Observe the following precautions:  
Avoid contaminating the coolant with foreign matter (such as sand or dust,  
etc.).  
Do not use any coolant additives.  
 
467  
8-2. Steps to take in an emergency  
If the vehicle becomes stuck  
Carry out the following procedures if the tires spin or the vehicle  
becomes stuck in mud, dirt or snow:  
Stop the engine. Set the parking brake and shift the shift lever to N.  
Remove the mud, snow or sand from around the stuck tire.  
Place wood, stones or some other material to help provide traction  
under the tires.  
Restart the engine.  
Shift the shift lever to E, M or R (multi-mode manual transmission)  
or 1 or R (manual transmission) and release the parking brake.  
Then, while exercising caution, depress the accelerator pedal.  
When it is difficult to free the vehicle  
Press  
to turn off TRC.  
Turn off TRC and/or VSC if these functions are hampering your attempts to  
free the vehicle. (P. 246)  
Emergency hooks  
When your vehicle becomes stuck and  
cannot move, the emergency hooks are  
used for another vehicle to pull your  
vehicle to pull your vehicle out in an  
emergency.  
Your vehicle is not designed to tow  
another vehicle.  
8
 
468  
8-2. Steps to take in an emergency  
WARNING  
When attempting to free a stuck vehicle  
If you choose to push the vehicle back and forth to free it, make sure the  
surrounding area is clear to avoid striking other vehicles, objects or people.  
The vehicle may also lunge forward or lunge back suddenly as it becomes  
free. Use extreme caution.  
When shifting the shift lever (vehicles with a multi-mode manual trans-  
mission)  
Be careful not to shift the shift lever with the accelerator pedal depressed.  
This may lead to unexpected rapid acceleration of the vehicle that may  
cause an accident resulting in death or serious injury.  
NOTICE  
To avoid damaging the transmission and other components  
Avoid spinning the wheels and depressing the accelerator pedal more  
than necessary.  
If the vehicle remains stuck even after these procedures are performed,  
the vehicle may require towing to be freed.