01 cl600 with problems!!! - PeachParts Mercedes-Benz Forum

92300SE · #1 07-14-2005, 03:36 PM

just bought a cl600 project car....the first question i have is there any way to reset the computer without taking the car to the dealer...because the car has been sitting for a while...seems to missfire and the dash looks like a Christmas Tree with all the lights, also here is the list of problems i noticed if anyone has any fixes for me,

moon roof, overhead console with lights not working

both pass and driver power seats dont work nor do massaging seat option

engine has a misfire, i beleive this is causing the mild amount of smoke from the driver side exhaust pipe on take off

transmission seems to be in limp mode, wont go past second gear when in winter mode and first gear when in sport

power locks,automatic closing doors, power closing trunk, and power release headrests are all inoperable....i think these are all related....

if anybody has any ideas or fixes please let me know before I take the car to MB service and commit suicide!!!!!!!

Melcher · #2 07-14-2005, 03:53 PM

Good luck -no sarcasm there either.
That vehicle is exactly as you stated "a project car". The mis-fire complaint is an on going adventure with MB. Coils, ignition modules, ECU's, software updates, plugs, front cover modifications. There's no quick fix, or quick check for that.
Just pulling the coils on that car is a pain in the butt for a DIY'er.
If your dealer goes by the lastest and greatest service bulletin, regarding that vehicle w/ mis-fires. They're gonna want to pull the coils and check for
scorching, and then pull the plugs and check for oil or gas contamination.
So just to get started expect a five hour check out time at best. And be prepared to go from there. Keep us posted.

mike690003 · #3 07-14-2005, 04:04 PM

The mass of electrical problems gives me the impression that your CL is a flood damaged car. Tracking down those electrical gremlings will be time consuming and costly. Remember that car is MB's flagship coupe, which costs $100k new. Hunting for a place that will repair this car for a reasonable price will be challenging. I think you're in over your head, and should resell that lemon.

Nothing costs more than a cheap Mercedes.

pecora · #4 07-14-2005, 04:38 PM

Try to locate all ground points 10-20+/- where elect. systems ground to body. May be a brown wires bolted to fender well under hood, etc. Clean them to improve grounding. I have tighten them or wire brushed them and even spraid hard to get to ones with battery terminal cleaner. Also, replace all fuses with fresh ones even if old ones seem ok. Read manual on how to sync. windows, moon roof, and seats.

Hope this works it has for me on 1998 CLK that sat for two years in my 86 year old dad's garage

Rick

Johnhef · #5 07-15-2005, 08:56 PM

I agree with the above. If youre not familiar with the 137, it'd be best to find something simplier for a project... That car is a nightmare, and I've had at least 30 of them with symptoms you describe- no one else wanted to work on them

Isn't a single coil pack alone over $8,000? Maybe it was only 5K...

It will be damn near impossible to fix that without the SDS to help you along.

But, to get you started, your CAN network is down, fix that first.

DR.DIESEL · #6 07-15-2005, 11:59 PM

No, No, coils are down to 980 bucks. I quoted someone $5000 in parts and labor today just to bring a 2001 CL600 with 80,000mi up to current running
standard. New ECI rails, Plugs, ME flash, Voltage Tansformer, and De-clog
passenger front cover. $5000 JUST TO START! Yikes. I told them only,
after the ignition system was 100%, could I address the Blue smoke and
oil consumption issue. That may be an additional $35,000 for a new engine.
Client almost had heart attack. At least their 8 o2 sensors and 6 cats are ok.
That would add and additional $10,000 to repl.
Man, I never thought a Ferrari would look cheaper to own.
"project" and "600" should never go together.

Dr.D

Johnhef · #7 07-16-2005, 12:04 AM

haha, thats great. $800 is a lot more managable.

As far as the oil consumption issue, I'm sure youre already aware of the clog that forms in the right cylinder head cover, right? (edit: nevermind I must have missed your de-clog line above)

I've had a few (3 or 4) that had oil wick up the entire engine harness as well. Took me a hell of a long time to find the source on my first one. There are two sensors at the front of the left head, one of them leaks... I forget which one it was.

DR.DIESEL · #8 07-16-2005, 12:25 AM

Oil pressure for CSO pump, I do those automatically.
M137 engine harnesses can be a pain, so some sensors are a whole bunch easier. I always hate finding ECU's full of oil. Yech...

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