yuriylitvinov

Hi guys, I have an alternator/battery warning error on C230K 2003. I took it to some MB repair shop, they rebuilt the alternator and they said they replaced a regulator, but the error is still on. I checked the battery- it's charging fine. After testing car with a scanner. It said something like " no communication between regulator/ and computer" Repairs shop said i have to buy a brand new Alternator from MB dealers but i really don't feel like wasting another 800$

Anyone has any ideas what to do with it?

Also does anyone know where i can get a good PC software for testing Mercedes?
(i want to use USB2 on my laptop and connect it to the mercedes via special cable )

Thanks,

Phin

Hey bro,seeing that this is your first post(welcome),you might want try to use the Search feature(top of thread) to see if you can answer your own question(s).At least tell us you tried to search,but were unsuccessful and are still looking for help.Good luck man.(just trying to help)

yuriylitvinov

Thanks man, yeah i did my research. there are a lot of posts on Alternator errors but nothing for my case Thanks though!

Phin

..this might be what you're looking for ...can't help you with the other...

http://www.mercedesmanuals.com/OBD_I..._Tools_s/7.htm

BlackLiquorish8

what type of W203 do you have? how many miles? give us more info

yuriylitvinov

its C230k 2003 i have about 60k miles on it. Error apperead pretty randomly. Just by itselt...

Glyn M Ruck

Suggest you look at Carsoft or ELM - Search the internet - there are a whole lot of products out of China.

What code are you getting?

yuriylitvinov

Thanks man, Carsoft looks good i think i'll buy it from ebay.

For the error, it says SIM4 000 446 69 02 -F-

and then in the description "no communication between regulator and computer"

C230 Sport Coup

Thats odd... I don't think C Class HAS any communication between regulator and computer.
Thats like an S class feature.

Glyn M Ruck

What is the OBDII/Merc P code

yuriylitvinov

Sorry, don't have that info. Have to buy that Carsoft thingy first...



Thats odd... I don't think C Class HAS any communication between regulator and computer.
Thats like an S class feature. ------------------------------------------------
Regreatfully I have a C class, but it is weird indeed. I was thinking that some wiring might be screwed up because there's nothing wrong with the car, just that stupid red error on the screen

Glyn M Ruck

Just get a cheap $39 OBDII/CAN scanner first.

C230 Sport Coup

I would tend to think that something in DAS was inadvertently enabled that should not have been.

Glyn M Ruck

+1 - could well be

yuriylitvinov

hmm ok... and how do i fix that?

Glyn M Ruck

Take it to the dealer and get him to look at it with the STAR

C230 Sport Coup

Of course, 1st thing to do is check all the electrical connections.
Maybe the plug on the regulator is not seated properly.
If you did not have this error prior to the alternator replacement, it's unlikely
anything in the ECU was changed.
It's more likely something was done wrong in the repair.

I mentioned it only, because I recall reading that on more expensive
benz's there is some sort of computer hookup directly to the alternator,
sends a pulse orsomething...sorry I don't recall the details.
Makes the alternators even more stupid expensive.

C Class never had this feature, at least in the US.