NazarKmet

Hello, Please help, Recently I replaced Hybrid Battery Charger Inverter Converter with Error codes U011000 and U011081, Car started and I was driving for a week, Today can't start again.... My head almost blow out....I scan the car with iCarsoft v3.0 and get new codes C11000 State: Current Communication with Control Unit 'Electric Machine A has a malfunction, and U010000 same description Communication with the engine Control Unit has a malfunction and car did not start... Can anyone let me know is this again the Inverter need to be replaced or I can do anything ???? I am pissed so much with this S400 Hybrid can't explain.....
Please help me any information will be helpfull.

BOTUS

very few forums have members that are knowledgeable about Mercedes hybrid cars - they tended to have more issues of a more complex nature and sold in very low numbers
you would be better off finding a Main dealership that sold and serviced LOTS of these - many dealerships have zero experience on hybrids and these days very few technicians left that ever saw or worked on any S class, let alone did any dealer training on the complicated hybrid ones

it could be anything, a lack of critical software improvements are probably half the problem... and on Mercedes cars module software updates are DEALER only and Mercedes' updating system is first gen old school, one module at a time... and although they pretend an update on one module can't interfere with the correct operation of another that's untrue... it even blocks critical updates if another important one on another module is out of date

E55Greasemonkey

At this point in time, the S400 hybrids are nothing more than parts cars when they break down. They have exceeded their useful service life. They were nothing more than an experiment by MB. It's time to move on. You may not be aware, but the 2010 ML450 hybrids were lease-only. When the leases were over, MB took the cars back- every one of them- ripped the powertrains out and sent the chassis to a scrapyard in New Jersey. That should tell you something.

With a failing hybrid system you also have the potential to electrocute yourself, aka die, while attempting to repair something that you haven't the training nor experience for.

re_jasna

Heloo I have the same problem, did you manage to fix problem?

George993

In my opinion the only way to deal with a failed S400 Hybrid system is to get rid of it and to drive a reliable S350 style car. A few HP and one or so MPG loss is not that much noticeable and the peace of mind is priceless. My mechanic can do conversion for you, PM for details. Don't attempt to do it yourself, it will take you several months of frustration (unless you electrocute yourself sooner). I've been driving a problem free S400 for a while.

nath_h

Agree with others here. I've got a car that is baffling and difficult enough to support at 15 years old, but a Hybrid S Class is no go territory. You have a nearly impossible car to keep running, and certainly running without draining your wallet in a huge way. I have also heard of methods to eliminate the hybrid components to make it a reasonable/reliable car, but you'd be better off to cut and run.

re_jasna

Thank you for answer.
So you didn't manage to solve the problem either... This is getting frustrating and I'm starting to believe that turning off the hybrid system is the only reasonable solution. I found information about which parts to replace, but what software do I need and where can I get it?

BOTUS

software on a merc is a crazy mess - and you get at it with experts and special tools and equipment - and even then the hybrid is another level of insanity

MBCO

Sorry to say I support the prior posters. Unfortunately you own a “parts” car now. If you have the time and wherewithal to strip parts and deliver you could probably make money off the carcass, otherwise it’s tow it to the breaker or scrap yard and take your lumps.
Good luck and keep us posted.

nath_h

The software would take a level of expertise that probably only one or two people have, anywhere, and they are probably the one or two people who have managed to successfully do this project. I'm sure BenzNinga could do it, but this is way beyond his normal services and would require many hours of billable coding time, if it's even possible. If I were you, I'd buy a same year/same model car w/o hybrid system, with as close to the same color combination, and use it as a donor car for whatever problems come down the road with your 'new' car. Your car is worth more in the various parts and bits than what you'd get dumping it at a junkyard.

argon3030

Any used hybrid is going to be a crapshoot, but a used Mercedes hybrid is a very expensive crapshoot. If you like the w221 body, consider replacing it with the S350 Bluetec. The bluetec diesel makes more torque than the S400, and gets much better fuel economy than the S400 hybrid. The S400 is worse than all other w221 engines, worse MPG, worse power, worse reliability.

George993

Mechanically you can do it in a week, it will take you many months do the software if you have the right skills and connections. PM me your phone number and my mechanic can call you and guide you through the steps. Make sure that you have the background to work with high voltage systems, have access to a good machine shop and are comfortable with Star/Vediamo and simple mechanical jobs like removing the transmission etc. Don't attempt it otherwise. Even mechanically there are multiple options for the conversion and not all of them work.

Otherwise just sell the car for parts or ship to someone who can do the job. Note the posts from those who tried to make the hybrid system work, spending up to $30,000 for that, not recommended. After doing three S400 hybrid removals and putting thousands of miles on converted cars we know a little bit about the process... we keep two of them as our daily drivers.

S400 with hybrid removed is a rock solid, great car!

George993

BTW, don't underestimate the high voltage. Looks harmless when you look at it. But when I built my first fully electric sports car I accidentally touched high voltage battery terminal with my arm through a sweatshirt - it was nasty and if not for the sweatshirt I would not be around to write about it.

re_jasna

I can't find the option to send you a message.
Can you please contact me by email re_jasna@yahoo.com

George993

Done