The Audi Q3 start stop system automatically stops the engine, effectively putting the engine into standby when the vehicle comes to a stop. The automatic engine start stop system helps to save fuel by preventing idling and also to reduce harmful exhaust emissions.
There are however many reasons why the Audi Q3 start stop is not working and in such instance you’ll see the amber or grey auto start stop symbol with a strike through it meaning auto stop is unavailable. The following reasons are why your Audi Q3 start stop is not working:
- High power usage. Electrical load of less than 65 amps for start stop to occur.
- Coolant temperature too low or too high. This is typically where the coolant temperature must be greater than 60°C or less than 115°C.
- Auto stop may not occur is the transmission oil temperature is greater than 10°C or less than 120°C.
- For auto stop to occur, there must be adequate vacuum in the brake booster.
- The hood / bonnet must be closed.
- Driver door must be closed.
- Seat belt must be buckled.
- Accelerator pedal must be released.
- The brake pedal must be applied.
- Steering wheel angular velocity must be in the specified value range. Typically 90° or less from the center position for start stop to occur.
- Max A/C or defrost is not selected. If the A/C system is active, the ambient temperature should be less than 35°C (95°F).
- Rear defrost is not selected.
- Battery and charging system voltage is greater than 11.3 volts.
- For auto stop to occur, the battery temperature is between 5°C (41°F) to 60°C (140°F).
- Hill Start Assist is not active.
- Road grade while stopped is less than 15%
- ABS must not be active.
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