Sebastian Wren

I see there are a number of people who post about starting issues. E.g. Start/Stop not working.

Recently, the engine has started slowly when warm.

It seems the first port of call is to check the battery ? Then the starting sequence?

Any thoughts/Advice on who/what/how to investigate ?

Cls63pp

I also have issue without finding any solution and no fault codes

Sebastian Wren

Just change the bat. Literally like a new car! Good luck finding one though!

Cls63pp

I have also changed the battery and it starts up faster now but when warm sometimes slower....did you change the little battery in the trunk also?

Sebastian Wren

Oh nice. Yeah, that was changed last year. Not sure what powers what. But potentially worth it. I was advised a 6 year max lifespan for each bat..

which year is yours ?

Also, does yours make any rattle/cabin noises. The amount of clicks and rattles it has is silly for a premium car

Robert AMG

iTrader: (1)

The issue is in the motor starter, those 278 starter are bad, my cls has 47000km and i just change the starter cause of slow engine starting when warm.