Stephon290689

Hey in my country we barely have any hybrid specialist mechanics. it is also very costly
any and all help will be much appreciated.

RA032924

I would check the UK forums...they seem to have a bigger C350E community there. I found this forum link which may be helpful to you...
https://forums.mercedesclub.org.uk/i...-c350e.172603/

Would love to hear what you discover...I 'still' love my C350e but sadly haven't driven much since COVID.
On a positive note, I have not used any gasoline since Covid started...all short trips on Electric only.

Leonidasb

hi, I have the same problem did you find out what was the problem? Thank you

ijordan

The same problem! Cannot see any replies! Usually cannot shift to R or D, message disappears overnight! In the meantime the Car cannot start!

MooseLinguist

For anyone else still interested or finding this later, this is almost certainly due to a low (probably failing) 12v battery. It throws up loads of electrical slips, faults (and fault codes), as you may know from conventional cars, and also seems to push the HV system into thinking it's losing voltage or having insulation problems (likely the cause of the Malfunction notification). This is also why it says it can't tow. Another common message asks you to drive to a dealership without changing gear (likely due to running gear actuators not getting enough juice). Other faults that may get coded to the OBD may concern cruise control, collision provention, ABS, oil pump actuators, the list is endless. Many of these are not faults per say but just flagging up as failing due to power loss. Suggest you change 12v battery, clear all codes and go from there.

Reason car won't start is likely that there's not enough juice in the 12v to depress brake pedal. Press a bit harder, past the switch which allows you to put in D, and you'll get it on. Or, better, charge up the hybrid battery and then try. If all else fails place a trickle charger on the 12v for a few hours and then try. Be wary of this, though, as AGM batteries need about 15v to charge and many ordinary chargers won't do it. I wouldn't advise messing too much with a dud battery either, since the HV, 12v, and aux battery (capacitor really) are very interlinked and you don't want to cause any more issues.

Merc4321

hi there. Did anyone ever find out what the problem is please?

I have a headache from this car. New 12v agm battery, new starter motor, new auxiliary battery. Please help!

Merc4321

hi there. Did you end up finding out what the problem was please?

ASF

Hi,

Did you find out what the problem was? I have the same problem with my car MB 350e 2015. . Beside the battery malfunction the hybride system is also not working. I cant charge the HV battery by the cable either.

Regards
Ab