C300 Power seat not working! - MBWorld.org Forums

Feb 28, 2015 | 10:41 PM

James0527

Thread Starter

Newbie

Joined: Feb 2015

Posts: 4

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C300

C300 Power seat not working!

Hi All - Appreciate any help.

2010 C300 4matic. drivers side power seat inside track or motor is not running. when switch is pushed either direction, the outside track/motor works fine but the inside motor doesn't move, so the seat kinda turns sideways. I looked under seat and disconnected/reconnected electrical contacts thinking it may have been a bad connection.... now, i have a Drivers Side SRS error on my dash...

Thanks in advance.

Feb 28, 2015 | 11:45 PM

W57thNY

Member

Joined: Oct 2013

Posts: 140

Likes: 1

From: Northern Virginia

2013 Mercedes-Benz C250, Iridium Silver Metallic; 2001 Mercedes-Benz C240, Brilliant Silver Metallic

Quote:

Originally Posted by James0527

You may very well have disconnected the driver's seat airbag. Unfortunately, with that code, an independent shop may not be able to fix the code.

Mar 1, 2015 | 04:48 AM

centfl-c300spt

Junior Member

Joined: Aug 2013

Posts: 58

Likes: 5

2008 C-300

Your seat motor is off track. Happened to both of my front seats, at different times. You can try to get it back on the track, but I'd have an Indy shop take a look at it. Cost me about $50 bucks each time. (charged me for 1/2 hr labor)
As for the airbag, try disconnecting the battery for 15 minutes and see if that clears the SRS code. If not, you'll have to have the dealer do it.

Aug 23, 2015 | 02:14 AM

Jlkphidelt

Newbie

Joined: Aug 2015

Posts: 2

Likes: 0

Mercedes c300

C300 Power Seat Stuck, Plastic Piece

Quote:

Originally Posted by James0527

Mine was doing the same thing. The plastic bar underneath the front of the seat that holds the electrical connectors in place broke. Then the plastic piece got stuck under the track and the seat would not move. Once I disloged the plastic bar the seat track on one side worked and the other side did not. The seat would twist but not really go backwards or forwards.

To try and fix:
1) Removed seat cushion. Under the seat right upfront are two star screws that attach the seat to the clamp using a half-circle metal clamp. Remove those 2 screws.
2. Lift the seat up.
3. You can disconnect some of the wires and remove some cable holders to give you some space while leaving the airbag wires attached.
4. You will see the motor with two flexible shafts going to the two tracks. Notice the motor is held in place with rubber grommets. Make sure the motor is in place and the flexible shaft enters the hole in the tracks. (i.e. look how the flexible shaft looks on the side that works and make sure the broken side looks the same.
5. If you don't see anything wrong the track maybe messed up.
6. Reassemble seat.

On mine on of the motor grommets poped out and the flexible shaft was not in the hole on the bad side. Once I removed motor, placed flexible shaft in hole and reseated motor it worked.

Feb 15, 2020 | 06:21 PM

DrivingForce

Member

Joined: Jan 2020

Posts: 239

Likes: 23

2011 C300 Sport, 6M, Dynamic Handling Pack

The C300 I bought today has the same problem. I guess I'm going to use the method described to pop up the seat bottom so I can see what's going on. Is this the correct way to do it (in the video below)?

https://youtu.be/IRMb-RAhpC8

https://youtu.be/rV0Xql5eZF4

Also which ones are the airbag wires so I can be sure to leave them connected?

Last edited by DrivingForce; Feb 15, 2020 at 06:33 PM.