Mercedes stop-start issue has started...

Hi

I drive a 2014 Mercedes E 220 model saloon and it has start-stop technology, but recently it's just switching the engine on and off at the traffic lights; it's doing this quite often so I have to turn it off. I have heating on as per usual and I have never had this problem before.

Tahir Aurangzaib (OLDHAM)

Nov 2019 Filed under: fault

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Expert answer

Hi Tahir,

The first thing we'd check is the condition of the battery. It sounds like the system is turning off the engine as normal, but then sensing that it needs to go back on right away. That's unusual, to be honest, as most systems just won't turn the engine off if an issue is detected. I'd advise you bring the car to a good mechanic or auto-electrician to have it looked over.

Our feature, Why won't my car's stop-start system work?, is worth a read as well.

Shane O' Donoghue - Complete Car Advisor
@Shane_O_D