The Auto Start/Stop function helps save fuel.
The system switches off the engine during a stop, e.g., in traffic congestion or at traffic lights. The ignition remains switched on. The engine starts again automatically for driving off.
Automatic mode
After every start of the engine using the Start/ Stop button, the Auto Start/Stop function is in the last selected state.
When the Auto Start/Stop function is active, it is available when the vehicle is traveling faster than about 3 mph, approx. 5 km/h.
Engine stop
The engine is switched off automatically during a stop under the following conditions: Steptronic transmission:
The air flow from the air conditioner is reduced when the engine is switched off.
Displays in the instrument cluster
The display indicates that the
Auto Start/Stop function is
ready for an Automatic engine
start.
The display indicates that the
conditions for an automatic engine
stop have not been met.
Functional limitations The engine is not switched off automatically in the following situations:
BMW X3 Owners Manual > Tire Pressure Monitor TPM: Low tire pressure message
The yellow warning lamp lights
up. A
Check Control message is displayed.
There is a flat tire or a major loss in
tire inflation pressure.
No reset was performed for the system.
The system therefore issues a warning
based on the tire inflation pressures before
the last reset.
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