@snowathlete S/S won't always work for a lot of different reasons.

 

Especially if there is high power consumption, A/C is on, low temp outside, etc.

The stop / start system is quite a complicated process with a varying number of influences...

 

Conditions for the automatic engine shut down (stop phase):

 

• The gearshift lever is in Neutral.
• The clutch pedal is not depressed.
• The driver has fastened the seat belt.
• The driver's door is closed.
• The bonnet is closed.
• The vehicle is at a standstill.
• The engine is at operating temperature.
• The charge state of the vehicle battery is sufficient.
• The stationary vehicle is not on a steep slope or a steep downhill section.
• The engine speed is less than 1200 1/min.
• The temperature of the vehicle battery is not too low or too high.
• There is sufficient pressure in the braking system.
• The difference between the outdoor- and the set temperature in the interior is not too great.
• The vehicle speed since the last time the engine was switched off was greater than 3 km/h.
• The front wheels are not turned excessively (the steering angle is less than 3/4 of a steering wheel revolution).

 

Conditions for an automatic restart (start phase):

 

• The clutch is depressed.
• The max./min. temperature is set.
• The Defrost function for the windshield is switched on.
• A high blower stage has been selected.
• The START STOP button is pressed.

 

Conditions for an automatic restart without driver intervention:

 

• The vehicle moves at a speed of more than 3 km/h.
• The difference between the outdoor- and the set temperature in the interior is too great.
• The charge state of the vehicle battery is not sufficient.
• There is insufficient pressure in the braking system.

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