W211 E200 Cdi battery problem
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Newbie
Joined: Jan 2015
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W211 E200 CDI 90kw
W211 E200 Cdi battery problem
Hello!
I got really big problem with Red battery message ( Visit workshop)
I scan Battery Control Module with my diagnostic tool i get fault code "9055 - The terminal 61 signal on the CAN bus is missing or is faulty."
but that fault code say nothing for my problem.
Problem 1
I also check voltage output from my alternator to main battery guess what? i got 12.3v seems fault is here but its not i change alternator to the new one, and still get the same voltage output from alternator, but something interesting is that, when i accelerate output goes from 12.3 to 13,9v and 14v and doesn't goes down, seems okay? i think it should go to the 13.5v when i start engine without accelerate? then i check "Drive Belt Tensioner" i change it also because it was in bad condition, but still same problem with charging a battery from alternator, doesn't charge if i don't accelerate on high revs.
I also change both batteries "AUX battery and Main battery" still got the same problem Red Battery Message on my dash, then i change Aux Battery Relay and clear the codes with my diagnostic tool, start the engine and again same pop up with "Red Battery Message" i took my voltage meter and checked Aux battery with engine on, got 12.2v seems its not charging, i being to look all fuses, all fuses was in good condition expect one in "F32 fuse box" i change it and i got the same
fault code on my dash.
Then i change Battery control Unit but problem was not gone.
I spend a lot money to trying fix that "Red battery Message" on my screen.
Maybe you guys will help me to find out my car's problem.
Sorry for bad English.
I got really big problem with Red battery message ( Visit workshop)
I scan Battery Control Module with my diagnostic tool i get fault code "9055 - The terminal 61 signal on the CAN bus is missing or is faulty."
but that fault code say nothing for my problem.
Problem 1
I also check voltage output from my alternator to main battery guess what? i got 12.3v seems fault is here but its not i change alternator to the new one, and still get the same voltage output from alternator, but something interesting is that, when i accelerate output goes from 12.3 to 13,9v and 14v and doesn't goes down, seems okay? i think it should go to the 13.5v when i start engine without accelerate? then i check "Drive Belt Tensioner" i change it also because it was in bad condition, but still same problem with charging a battery from alternator, doesn't charge if i don't accelerate on high revs.
I also change both batteries "AUX battery and Main battery" still got the same problem Red Battery Message on my dash, then i change Aux Battery Relay and clear the codes with my diagnostic tool, start the engine and again same pop up with "Red Battery Message" i took my voltage meter and checked Aux battery with engine on, got 12.2v seems its not charging, i being to look all fuses, all fuses was in good condition expect one in "F32 fuse box" i change it and i got the same
fault code on my dash.Then i change Battery control Unit but problem was not gone.
I spend a lot money to trying fix that "Red battery Message" on my screen.
Maybe you guys will help me to find out my car's problem.
Sorry for bad English.
Out Of Control!!
Joined: Jul 2003
Posts: 15,901
Likes: 4,632
From: North Scottsdale, AZ
'71 Pinto
Assuming vehicle is MY03-06 could be the relay (current part # 0025424719), faulty relay will give you red warning. If f70 was bad (front prefuse, interior foot well) this is for battery relay http://workshop-manuals.com/mercedes...ion/page_4935/ to replace see here (wheelhouse) http://www.google.com/url?sa=t&rct=j...,d.eXY&cad=rja
Thread Starter
Newbie
Joined: Jan 2015
Posts: 3
Likes: 0
W211 E200 CDI 90kw
Assuming vehicle is MY03-06 could be the relay (current part # 0025424719), faulty relay will give you red warning. If f70 was bad (front prefuse, interior foot well) this is for battery relay http://workshop-manuals.com/mercedes...ion/page_4935/ to replace see here (wheelhouse) http://www.google.com/url?sa=t&rct=j...,d.eXY&cad=rja
Hey! Thanks for your reply!
but i have tried 3 Aux battery relays, i bought one new aux battery relay from local car parts shop, the second one is old from my car the OEM part, third one i had try to put from my friends w211 also OEM part. Still same Red Battery Message
Last edited by RobbieLu; Jan 27, 2015 at 05:07 PM.
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E320 cdi
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