Engine light came on and dealer replaced magnets??? What are they talking about? - Page 2

Jun 4, 2012 | 04:57 PM

#26

will_w204

Member

Joined: Apr 2008

Posts: 213

Likes: 2

97 S600 coupe/gf 16 C300 Lux. Former: 08 GL450, 83 300D, 97 C230, 08 c300 luxury, 92 500SL, 93 400E

My car was in the shop a month ago for a CEL, and I was told the same - bad seal. Seriously? Well, I haven't touched the filter housing, and the car is CPO with 24k, but they wanted me to pay for it. I declined, and they ate it.

Now, mind you, I've had some rough running occasionally from this motor, but I chalked it up to maybe bad gas or something. Today, I tried to crank, and it didn't want to, and then it did, but started bucking and chugging, and then flat out stalled. I cranked it again, and everything's been fine since, with no CEL.

Called my SA, and he thinks the cam pos sensor is "on the way out." I suspected cam magnets from the last CEL, but I also didn't know there was an actual RECALL on them - is there? The car is OOW in 4 months, so I need to get action soon.

Jun 5, 2012 | 10:25 AM

#27

sirics

Member

Joined: Apr 2009

Posts: 198

Likes: 0

C300, ML 320, 190E

Is there a TSB number for this?

Jun 6, 2012 | 02:05 PM

#28

MBRedux

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Joined: Oct 2009

Posts: 2,071

Likes: 20

Nissan GT-R BE / '12 Ducati-1199 Panigale S / '12 C300-4M Loaded/GLK350-4M Loaded

Camshaft/Crankshaft position sensors fail for all kinds of reasons, mainly the coil capacitance drops over time and it loses magnetic strength .. Very common issue.

Feb 16, 2018 | 08:44 PM

#29

Ashton3

Newbie

Joined: Feb 2018

Posts: 1

Likes: 0

Mercedes gl450

Camshaft magnet

Quote:

Originally Posted by white_glass_top

I just left the dealership today, had to drop mine off for the CEL, come to find out that this problem is an actual recall from Mercedes-Benz. So for those not tracking this, might wanna get yours replaced. the Cam Sensor Magnets, that is.

Hi I’m having the same problem, the engine light came on and the dealer told me that the magnets need to replaced all 4. I have a GL450 they didn’t mention anything to me about a recall. I wondering is it only for the series you have or the year you had. Can you please respond back, thanks

Feb 18, 2018 | 03:55 PM

#30

superangrypenguin

MBWorld Fanatic!

Joined: Jun 2011

Posts: 2,366

Likes: 251

From: Canada

A car

OP what year is your car?

Jan 8, 2019 | 01:23 PM

#31

Sean Daveiga

Newbie

Joined: Jan 2019

Posts: 5

Likes: 0

2013 GL550

Just got mine back

Quote:

Originally Posted by Ashton3

I have a 2013 GL550 and and couple months ago a check engine light came on. I took it in the next day to be told that cam magnets failed and got oil all over fuel rails, wiring harness and ECU (thank God all still under warranty). I was then told that the wiring harness has to be remade in Germany and would take 3 MONTHS to come in. After 3 months I got the truck back but am concerned that this ou s a problem that could reoccur again once out of warranty. There was no mention of "new" parts to alleviate this problem in the future l. AND I have the dealer installed Renntech upgrade! Thoughts???

Apr 4, 2022 | 07:51 PM

#32

Jus_Seyin

Newbie

Joined: Apr 2022

Posts: 1

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E350

Quote:

Originally Posted by white_glass_top

Hi do you happen to know the recall #? I had 4 magnets replaced on my 2006 e350 90k miles and my SA said no recall available on the solenoid magnets. On service bulletin was for the harness.

Apr 7, 2022 | 08:16 AM

#33

JettaRed

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Joined: Nov 2016

Posts: 7,847

Likes: 3,495

From: Maryland

2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)

General note: Mercedes provide a lot of information when the sensors detect a problem, such as "Take the car to the dealer. Bring your checkbook!" However, when you get just a Check Engine light, the trigger is an emissions related problem, such as misfires, fuel trims out of range, evap problems, etc. It does not illuminate for mechanical problems that are not emissions related, such as an airbag malfunction -- you get a separate light for that.

I will continue to say this, but every Mercedes owner should had a Mercedes-specific scan tool. I use the

iCarsoft MB V3.0

and keep it in the glove box. In my SL, I keep it in the storage bin behind the driver's seat. I have one for each car. That way I know right away what the specific cause is rather than guessing based on the generic CEL.