2010 W204 CEL
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 377
Likes: 0
From: Orange County
'10 C300
2010 W204 CEL
Hello W204 community-
I've got a 2010 W204 C300, with about 39,700 miles (about to do trans service). No problems before but within the past 6 months, I've been getting quite a few check engine lights. First one came on, brought it to the dealer, they said it was a broken camshaft sensor and they replaced it. Another one came on for a few weeks, wasn't able to bring it to dealer, eventually went away. Most recent CEL came on, and dealer said it was a defective cam solenoid, replaced under warranty. ~5 days later (today), I'm getting another CEL, and have yet to bring it to the dealer. Are these indications of a bigger problem? Is there anything I should have the dealer check? Seems suspicious that all these things are going bad / triggering CEL... A little worried since warranty will end beginning of next year. Any input?
I've got a 2010 W204 C300, with about 39,700 miles (about to do trans service). No problems before but within the past 6 months, I've been getting quite a few check engine lights. First one came on, brought it to the dealer, they said it was a broken camshaft sensor and they replaced it. Another one came on for a few weeks, wasn't able to bring it to dealer, eventually went away. Most recent CEL came on, and dealer said it was a defective cam solenoid, replaced under warranty. ~5 days later (today), I'm getting another CEL, and have yet to bring it to the dealer. Are these indications of a bigger problem? Is there anything I should have the dealer check? Seems suspicious that all these things are going bad / triggering CEL... A little worried since warranty will end beginning of next year. Any input?
Senior Member
Joined: Feb 2007
Posts: 447
Likes: 4
From: Orange County.CA
12E350, 12ML350, 08C350
Hello W204 community-
I've got a 2010 W204 C300, with about 39,700 miles (about to do trans service). No problems before but within the past 6 months, I've been getting quite a few check engine lights. First one came on, brought it to the dealer, they said it was a broken camshaft sensor and they replaced it. Another one came on for a few weeks, wasn't able to bring it to dealer, eventually went away. Most recent CEL came on, and dealer said it was a defective cam solenoid, replaced under warranty. ~5 days later (today), I'm getting another CEL, and have yet to bring it to the dealer. Are these indications of a bigger problem? Is there anything I should have the dealer check? Seems suspicious that all these things are going bad / triggering CEL... A little worried since warranty will end beginning of next year. Any input?
I've got a 2010 W204 C300, with about 39,700 miles (about to do trans service). No problems before but within the past 6 months, I've been getting quite a few check engine lights. First one came on, brought it to the dealer, they said it was a broken camshaft sensor and they replaced it. Another one came on for a few weeks, wasn't able to bring it to dealer, eventually went away. Most recent CEL came on, and dealer said it was a defective cam solenoid, replaced under warranty. ~5 days later (today), I'm getting another CEL, and have yet to bring it to the dealer. Are these indications of a bigger problem? Is there anything I should have the dealer check? Seems suspicious that all these things are going bad / triggering CEL... A little worried since warranty will end beginning of next year. Any input?
Senior Member
Joined: Apr 2010
Posts: 410
Likes: 2
From: Orlando FL
2009 C300 4Matic Sport
These problems are too common. But they happen. I wouldn't worry about something worse happening soon.
My car does get CEL's at least twice a year and they go by themselves.
My car does get CEL's at least twice a year and they go by themselves.
Senior Member
Joined: Aug 2007
Posts: 469
Likes: 0
Don't worry too much about it. My issues from my 08 C350 was almost exactly identical from yours and that's from 2007 onwards.
I've replaced two cam solenoids within a month, a cam sensor, and defective ignition system within the 4 year warranty period.
Post warranty, I'm having abs/esp/ebr issues and headrest breaking(plastic clip broke), and melting rear taillights(repaired myself). Always keep your maintenance up to date. Get that trans flush service and make sure your SA logs every issue you have so when your warranty is done and that issue comes up again, you have ammo to have them repair it.
I've replaced two cam solenoids within a month, a cam sensor, and defective ignition system within the 4 year warranty period.
Post warranty, I'm having abs/esp/ebr issues and headrest breaking(plastic clip broke), and melting rear taillights(repaired myself). Always keep your maintenance up to date. Get that trans flush service and make sure your SA logs every issue you have so when your warranty is done and that issue comes up again, you have ammo to have them repair it.
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 377
Likes: 0
From: Orange County
'10 C300
A little update on what's happening: When I brought in my car last week, they replaced cylinder bank 2 exhaust camshaft solenoid due to fault code 0064. Now, with my OBDII reader I'm getting a Code P0025 "B" Camshaft Position - Timing Over-Retarded (Bank 2) reading from the CEL. Why would I get this if they replaced the solenoid? Is it the sensor?
Newbie
Joined: May 2013
Posts: 14
Likes: 0
From: Sarasota
2007 W164 ML350
I haven't had any CEL's with my C300, but went through 2 years of false camshaft position sensor warnings and replacements before the correct part was replaced on my 740I. One BMW service writer said I needed 2 CPS replaced on the same cyl bank when my model only has one per bank.
I don't know about MB's onboard computers but IMO, the BMW software throws random codes with no relation to actual problems. An OBDII reader is a definite necessity as your auto ages.
I don't know about MB's onboard computers but IMO, the BMW software throws random codes with no relation to actual problems. An OBDII reader is a definite necessity as your auto ages.
