Seat Adjustment for '02 CLK 320 - Mercedes-Benz Forum

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post #1 of 16 (permalink) Old 10-17-2009, 07:40 PM Thread Starter
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Seat Adjustment for '02 CLK 320

My passenger seat for an '02 CLK 320 is not functioning properly. The electrical recline and head-rest are working normally, but the front and back function are not (on the passenger seat only). Is there a simple resolution or should I take it in to the dealership for repair??
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post #2 of 16 (permalink) Old 10-20-2009, 07:04 AM
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First, just check to make sure the power seat connectors are all connected snuggly. They could have been knocked loose when vacuuming or something. Also, check all the fuses. You never know if that part of the seat is on another fuse.


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post #3 of 16 (permalink) Old 10-20-2009, 10:58 AM Thread Starter
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Thanx for your response FCPGroton,
Although I am not too mechanically inclined, I did check the connections under the seat and found nothing unusual. As for a possible blown fuse, is there a (owner manual) fuse chart on line where I could reference to check the correct fuse?
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post #4 of 16 (permalink) Old 11-22-2009, 08:40 PM
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Originally Posted by Narcisis View Post
Thanx for your response FCPGroton,
Although I am not too mechanically inclined, I did check the connections under the seat and found nothing unusual. As for a possible blown fuse, is there a (owner manual) fuse chart on line where I could reference to check the correct fuse?
I'm sure you've probably found out by now, but for future reference in the fuse box for your your seat controls is in the trunk under the spare tire cover on the top right. Under the cover is the locations of the fuses and their respective purpose. Your forward/back control *should* be #6, and the other functions is 7 and 8.
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post #5 of 16 (permalink) Old 11-23-2009, 04:40 AM
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Your forward/back control *should* be #6, and the other functions is 7 and 8.
You are 'almost right' - but the fuse distribution is a bit more complicated than your statement above.

From the WIS. Model 208.3 as of 1.6.99. Fusebox A, located in trunk. f1 to f9.

Front seat adjustment - (according to variants)

f6. 30A. either: front left seat fore/aft, backrest.
or: head restraint raise/lower, backrest, seat height at back.

f7. 30A. front left seat adjust. (bridged with f6)
front left seat fore/aft, seat height at front.

f8. 30A. either: front right seat fore/aft, backrest.
or: head restraint raise/lower, backrest, seat height at back.

f9. 30A. front right seat adjust. (bridged with f8)
front right seat fore/aft, seat height at front.

That said, I reckon your problem is the passenger seat fore/aft motor has burned out. Look in the archives for more info on that fault.
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post #6 of 16 (permalink) Old 11-23-2009, 09:21 AM
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Thanks for the elaboration, I just wanted to note that checking the 'simple' stuff, like fuses, should always be the first step in troubleshooting. In looking up the problem myself I see a lot of people pointing out the motor or other more in depth causes before noting the seat motors are individually fused and often throws people off since they think that all of them would be one circuit, and on that premise ignore the checking of fuses.
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post #7 of 16 (permalink) Old 11-23-2009, 12:15 PM Thread Starter
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Thanx to everyone that responded to my problem. The issue has been resolved and thankfully, it was a simple solution: replace the appropriate fuse. The answer was reflected in the suggestion above; it seems that I only checked the fuses under the hood and was not aware of the box located in the trunk. After my investigation there, I found the defective fuse, made the replacement, and now everything is fully opertional once again.

Thanx for everyone's response!!
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post #8 of 16 (permalink) Old 11-23-2009, 05:22 PM
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Good result...

However you should now ask yourself, why did a 30A fuse blow? Was the seat movement blocked in some way? Fuses should not just blow for no reason...
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post #9 of 16 (permalink) Old 03-04-2011, 07:43 AM
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I'm a dumbass ... almost

I know this is an old thread ... but I still wanna add to it in case anyone ever comes across the same problem.

My CLK driver seat got stuck to where I had to drive with my knees in my face. Just like the other dude in this thread, my seat would tilt and recline, but no back/forth movement. I spent an hour messing with wires under the seat, disconnected the battery, and everything.

Gave up, figuring I'd have to enlist the help of a professional. Drove it for a week. Got so sick of it, figured I'd try some DIY. When I read OTHER threads, people were saying it couldn't be a fuse because some functions were still operational.

Guess what?

Fuse #6

I feel like an idiot, but am so very glad to be driving normal again.

Thanks to everyone who contributed ... particularly the guy who mentioned that they are all fused seperately.
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post #10 of 16 (permalink) Old 05-15-2011, 05:38 PM
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Hello:
The exact same has happened to me. There is a seperate fuse in the trunk for that specific function. You may need to examine all 10-12 fuses to find the right one, as I don't recall if it was labeled on the fuse chart. Remember, this is the TRUNK fuse panel, NOT the engine compartment or driver's side dash fuses. Thanks
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