clicking sound under dash

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May 8, 2007 | 03:51 PM

Donmun

Thread Starter

Junior Member

Joined: Dec 2006

Posts: 55

Likes: 0

From: Florida

2002 S500

clicking sound under dash

Hello forum, my car has 84K+ miles and just yesterday I started hearing a loud clicking sound under my dash every 3 or so seconds for probably 30 seconds and then it stops. Does anyone have any idea what could be causing it?

Thanks,
DM

May 8, 2007 | 04:16 PM

turbo16lbs

Super Member

Joined: Mar 2007

Posts: 594

Likes: 2

From: Miami, FL

1991 Toyota MR2, 2002 C32 AMG

Im not a mechanic but I've read this in the past and I hope its a solution to your problem.

http://c32life.com/faq.htm#Q1

Second problem down the list.

Damn you Benz and your list of problems!!

May 8, 2007 | 04:17 PM

///AMG4EVER

MBWorld Fanatic!

Joined: Jan 2006

Posts: 1,052

Likes: 1

CLS55 Designo 030

stepper motor linkages... very common problems in W203s. Check the W203 C Class forum.

May 8, 2007 | 05:34 PM

ScottW911

Super Moderator Alumni

Joined: May 2006

Posts: 4,539

Likes: 4

From: Southern Cal

a C32 AMG & S-Works Tarmac

Quote:

Originally Posted by ///AMG4EVER

stepper motor linkages... very common problems in W203s. Check the W203 C Class forum.

Yup, that's what mine did at about 50K miles. It will cost about $600 to repair if you do not have extended warranty. It is almost all labor, to remove the entire dash. Sorry about that.

May 8, 2007 | 06:50 PM

SUNILP

MBWorld Fanatic!

Joined: May 2003

Posts: 4,005

Likes: 106

From: Houston, TX

2015 E250D

pricing depends on which stepper linkage is broken. The stepper motor no longer needs to be replaced. Just the plastic linkage which has been modified to be thicker.

May 8, 2007 | 06:54 PM

FrankW

MBworld Guru

Joined: Apr 2002

Posts: 22,058

Likes: 18

From: Diamond Bar, CA

W206 PHEV AMG

Quote:

Originally Posted by ScottW911

Yup, that's what mine did at about 50K miles. It will cost about $600 to repair if you do not have extended warranty. It is almost all labor, to remove the entire dash. Sorry about that.

extended warranty does not cover it. at least not my MBUSA 7yr/100k warranty.

May 8, 2007 | 07:30 PM

ScottW911

Super Moderator Alumni

Joined: May 2006

Posts: 4,539

Likes: 4

From: Southern Cal

a C32 AMG & S-Works Tarmac

Quote:

Originally Posted by FrankW

extended warranty does not cover it. at least not my MBUSA 7yr/100k warranty.

OK, I should have said CPO. Mine was covered.

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May 8, 2007 | 09:22 PM

ScottW911

Super Moderator Alumni

Joined: May 2006

Posts: 4,539

Likes: 4

From: Southern Cal

a C32 AMG & S-Works Tarmac

Quote:

Originally Posted by Donmun

what does the stepper motor control? Fixing it is going to be my weekend project.

The stepper motor is the linkage that controls the air direction in the ventilation. The sound you hear is the motor trying to set the vent direction, unsuccessfully.

I not sure if yours is the same, but mine sounded like someone shooting a large rubber band at the underside of mid dash, for about 30-60 seconds. Still, would have cost me $610 without the CPO.

May 8, 2007 | 11:32 PM

#10

Donmun

Thread Starter

Junior Member

Joined: Dec 2006

Posts: 55

Likes: 0

From: Florida

2002 S500

thats the sound i hear, well i guess i will just have to search for the schematics to see what i have to replace. After I do fix it i will try to post how i did it. But if anyone has any type of instructions on how, please let me know.

DM

May 9, 2007 | 07:02 AM

#11

SUNILP

MBWorld Fanatic!

Joined: May 2003

Posts: 4,005

Likes: 106

From: Houston, TX

2015 E250D

first isolate which stepper motor it is. Some are eaiser to get to then others.

May 9, 2007 | 09:32 AM

#12

Lagunatic

Member

Joined: Jun 2006

Posts: 136

Likes: 0

From: Chicago

02C32AMG

Quote:

Originally Posted by ///AMG4EVER

stepper motor linkages... very common problems in W203s. Check the W203 C Class forum.

Yep. Same thing happened to my C32 but at 40K miles. MB Star Warranty covered it.

May 11, 2007 | 04:31 PM

#13

andy_cyp

Senior Member

Joined: Dec 2004

Posts: 394

Likes: 0

From: UK

Obsidian E55

Crap, mines doint it too after 55k.Dayam!!!!!!!!!!!!!!

May 12, 2007 | 01:03 AM

#14

Semtex

Newbie

Joined: Apr 2007

Posts: 16

Likes: 0

From: Guam

2003 Black C32, 96 Nissan 300ZX TT(sold), 95 Jeep Wrangler, 94 Mazda RX-7 PEG, 00 BMW 323

I'm in too at 57K miles! If someone has instructions I am all ears. Thanks

May 12, 2007 | 02:55 AM

#15

Racin_fool

Super Member

Joined: Feb 2007

Posts: 809

Likes: 74

From: Dallas, TX

2008 E63 wagon (1 of 62)

Quote:

Originally Posted by Semtex

I'm in too at 57K miles! If someone has instructions I am all ears. Thanks

I listed the instructions on how to do this in the W203 section a short while back. I also have a bunch of these updated linkages just laying around if anyone is interested in doing it themselves. If anyone is local to the DFW area I can either guide you through it for a cheap fee or do it for you.

If anyone is interested in getting one of the linkages from me, just message me.