Mercedes C350e plug in hybrid Problem

[Gregmerc]

Hi,I have a problem with my car Mercedes C350e plug in hybrid when drive like electric is perfect just in moment when change to petrol engine showing fault on cluster and them is no chance back again to electric drive till I stop car and start engine again them start in electric like must be.
(In march mercedes warranty was end)
Thank you
Yesterday I change starter and no changes

 

[John Laidlaw]

It’s saying it all there- engine restart is malfunctioning so it will likely need a diagnostic on star and probably a software update. Having a hybrid outside warranty is a no no, I’d sort that as well as this issue

 

[peterws1957]

As John says you are going to get nowhere without a Star diagnosis.

 

[Steve@Avantgarde]

We have had a few issues with Hybrid stuff, a lot of software updates available for them. Some of them temperature related.

 

[Gregmerc]

thanks for yours answer, entry just showing this message.

 

[Steve@Avantgarde]

Theres a fault code that needs investigating right away. Something is either wrong in the software or there there is a fault with what it needs to count.

 

[Gregmerc]

I'd be happy to come to you, but I live too far Nottinghamshire

 

[John Laidlaw]

It’s never too far for the right independent!

 

[V6Matty]

Try MB Center in Nottingham, they will sort you out hopefully

 

[Gregmerc]

I have appointment Tuesday in chesterfield MB

 

[grober]

As people have intimated these are very complex systems. People tend to think of the electrical power system as an electric motor and a battery but these systems have complex cooling systems to keep them operating in a very narrow temperature band. Some info here
https://mbwis.net/en/doc/18045915
In terms of the fault U301700 Realtime control unit internal clock has a fault that might be the result of a momentary communication glitch sometime in the past and unrelated to your present problem. Systems employing multiple microprocessor control units all need to synchronise their internal clocks so they operate in the same " time zone" A momentary communication glitch might flag up a fault like this. Did the tech who performed the test feel it was significant?
More difficult to find would be a faulty temperature sensor giving a false reading- it might be enough to prevent use of the electrical power [system too hot/too cold] but not enough to trigger an "out of range" reading which would log a sensor fault code. Its this sort of thing that software updates address and an experienced technician who is familiar with these cars can anticipate .

 

[Gregmerc]

Car on electric engin working perfect the same petrol engine,I can drive on electric how I can till is still charged the same on petrol engine is perfect fault is only one and does not affect the drive only is this sing on a cluster
I make full test with xentry electric system is about 100' components including battery cell and everything is perfect.

 

[Gregmerc]

Hi,2 day ago mercedes service ring me and tell this is starter motor problem and relay I said nee starter was fitted by me any way he change it and ring me again and said this parts not resolve my problem yesterday ring me again and said this problem is electric battery wire cost 700 I said ok if this help please do it he said yes 100% this wire is problem!
Today morning ring me again and said we change this cable but still is the same issue !!and ask me to come and wants showing me different cable problems but is very expensive and maybe I buy some ware used and change it!!!!!!!!
What I can do it now ??
Cab they charge me for not fix car ?

 

[V6Matty]

Yes

 

[Gregmerc]

Yes for what ? Maybe I open mechanic garage and charge people for diagnostic without fixing because I don know nothing about mechanic

 

[V6Matty]

As in yes they can charge you for fitting parts and it still not being fixed, they may do some sort of deal and reduce the labour costs but they have still spent their time doing the work, would you work completely for free and spend you own money on parts on someone else’s car?

 

[Gregmerc]

This is service risk,so now my be change gearbox tomorrow engine and I will be pay for his not professional
Ok maybe you explain me how Mercedes service can not repair Mercedes car?

 

[V6Matty]

Because they don’t know enough about the hybrid drive system and are just going off fault codes instead of spending a long time with live data and numerous runs to get to the root cause. These guys aren’t diagnostic engineers they’re part fitters

 

[Gregmerc]

Exactly parts fitness.

 

[V6Matty]

Yes that’s what I said,