Automatic stop start-it’s stopped!!!

[JoJoP71]

I have a 2014 116i, during the cold spell I noticed my stop start stopped working, it’s warmer now but still doesn’t work, battery was low so have a new one fitted which I’m told they have registered, still doesn’t work, and they tell me to wait about 6 hours to reset?
Any advice please?

[Earthdweller]

Stop start doesn’t work in low temperatures or when the battery is low

[E63eeeeee...]

If you have a look in your manual you may find the absolutely bloody massive list of the things that can cause the stop start to not work. It's an eye opener.

[sjj84]

There's a massive list of conditions required for it to work. Below 3 degrees it won't work, plus there's things like if you're on an incline over a certain gradient, or if your steering is turned or if you've moved forward but not over a certain speed.

[Uncle Meat]

sjj84 said:

There's a massive list of conditions required for it to work. Below 3 degrees it won't work, plus there's things like if you're on an incline over a certain gradient, or if your steering is turned or if you've moved forward but not over a certain speed.

You're not kidding, this is the list from my manual. That last one is interesting given the impending fuel changes:

Restrictions of the function
The engine is not shut down automatically in
the following situations:
▷ Outside temperature too low.
▷ High outside temperature and operation of
the automatic air conditioning.
▷ Interior not heated or cooled to the desired
temperature.
▷ Engine is not yet at operating temperature.
▷ Sharp steering angle or steering operation.
▷ After reversing.
▷ Condensation when the automatic air con‐
ditioning is switched on.
▷ Vehicle battery is heavily discharged.
▷ At high altitudes.
▷ Bonnet is unlocked.
▷ Hill Descent Control HDC is activated.
▷ Parking assistant is activated.
▷ Stop-and-go traffic.
▷ Use of fuel with high ethanol content

[JoJoP71]

Hdc? Didn’t know I had that!

[Uncle Meat]

JoJoP71 said:

Hdc? Didn’t know I had that!

Ha ha you probably don't. That was from my manual for my X5 :-)

[DJMC]

Most likely "they" haven't set up the new battery correctly.

Ask them to re-check.

[guards red]

I fitted a new AGM battery to a mini and reset the system.

It took a number of days for the system to be happy that the battery was able to support Stop Start.

You might need to give it a little while longer.

[Deano_BMW]

Switch-off inhibitors

Under certain conditions the automatic engine start-stop function must be suppressed:

Vehicle is rolling (only vehicles with manual transmission)
Vacuum for the brake power assistance too low (only vehicles with manual gearbox)
Brake pedal not operated firmly enough, the vehicle is therefore not detected as being sufficiently stopped (only vehicles with automatic transmission)
Vehicle is stopped on inclines/downhill gradients > 12 %>
Applied steering angle > 6°>
Steering wheel movement not completed (otherwise insufficient steering servo)
Vehicle with manual transmission was not driven with speed > 5 km/h after last engine shutdown>
Vehicle with automatic transmission was not driven with speed > 9 km/h after last engine shutdown>
Engine not running at idle speed (accelerator pedal is operated)
Reversing
Engine operating temperature too low
Carbon canister is being flushed
Inadequate fuel grade
Active transmission adaptation (only vehicles with automatic transmission)
Hydraulic impulse storage not yet loaded (only vehicles with automatic transmission)
Stop-and-go traffic
State of charge of the battery too low
Ambient temperature below +3 °C
Ambient temperature above +30 °C (with air conditioning switched on)
Rain-light-solar-condensation sensor identifies condensation on the windscreen
Air conditioning switched on, however passenger compartment not correspondingly heated up or cooled down
Braking occurred with Antilock Brake System.

Thats the list for most of the modern stuff