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Hi,
We are being told that we are leaving the ignition on when leaving our GLC250 and that is draining our battery. The car is keyless and has push start ignition.
We have had the car tested and the diagnostics, we did see the screen output, did show high over night current drain of 2.5-4 amps from time to time AND what the system stated was ignition left on, but NOT always at the same time as the high overnight current drain.
We have actively tried to leave the ignition on to see how we could do it be accident and fail to see how it is even possible. We have tried to leave the car when it is in 'stop/start' mode but as soon as we open the door the engine starts. We have tried combinations of P and leaving without pressing the button but then doors do not lock or it is very clear very thing is still on.
Any help or answers as to why we are getting dead batteries on a 6 month old car?:frown2:
 

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Try taking the Stop/Start button out and starting/stopping it with the key? I find that's simpler as it also puts the handbrake on when you turn off.
 

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We had an incident involving our new GLC. We’ve realised that the car stays in active mode due to several Situations which is to be expected. It will flash a warning but it is not displayed consistently so you’d not see it unless sitting there with you’re eyes glued open.

We came to the realisation that by locking the car and hearing the horn tone for locked we could ensure the car was “off” and be assured of an easy start in the morning !

Think like a German engineer to understand your GLC and all will be well.
 
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