Multi contour seats not working

[Kevinherring]

Hi, thanks for this! This also sorted out my problem. Some more detailed instructions:

1. Remove the two small panels covering the fuse box on the left side of the boot.

2. Use a flathead screwdriver to pry out the 3 lugs that keep the larger piece of carpet trim in place - one under the carpet floor, two just by the rear light. Using your fingers, unscrew the large one towards the top.

3. Once you have the carpet trim off you will see the fuse box and wedged underneath that some grey foam - the pump is in here.

4. There is a 10mm nut that is partially hidden by some of the wires coming out of the back of the fuse box. Undo it.

5. The fuse box is also held on at the top by two clips and piece of metal. Pull the fuse box (towards the centre of the vehicle). The metal clip should pop out. Do not twist it otherwise you might break one of the plastic tabs.

6. It is easiest to access the pump by pulling the fuse box out as much as you can and then lifting the foam out from behind it.

7. Open the foam to reveal the pump. Pull the wiring and the tubes from the black box and pry off the grey top.

8. Disconnect the two wires and pull out the motor.

9. If you have a 12v PSU - now is the time to try it on the motor.

10. You do not need to undo any screws on the motor. Just slightly bend the two clips that are part of the metal motor housing so you can pull out the black plastic bottom of the motor.

11. In the motor you will see the worn magnets and deposits on the shaft as described previously. Clean the shaft.

12. Putting the motor back together is a pain. Don't force it otherwise you'll crack the magnets. I ended up removing the small plastic collar.

13. Again, if you have a 12v PSU, test it now.

14. Reconnect the pump and test your seats before you put it all back together.

15. Reverse procedure to put it all back together!

Just FYI, the markings on my motor were Rolling Pump P22D18R 6208 Oken Seiko Co. Ltd. Although Oken Seiko has a website I could not find a way to purchase a replacement motor. Perhaps there is a compatible one somewhere if someone destroys their motor!

Hope that helps someone. With these instructions it should take no longer than 30 mins and apart from putting the motor back together is dead easy.

 

[IforG]

Certainly helped me! Thanks a million for clear, precise instructions.

 

[NitJay]

This is perfect - thank you.

I've been looking for instructions for how to get the pump out for a while. I'll give it a go at the weekend.

 

[NitJay]

I gave this a go, instructions were perfect.

I tested it and it didn't work, but upon taking the pump apart again, the magnets had disintegrated (it obviously worked as I could feel heat).

To anyone else who reads this, just be wary of putting the motor back together.

For future reference, do you know what I must have done to make them split? I was sure they wen't on relatively easily.

Also - do I now have to replace the whole unit, will the unit from the W221 http://www.ebay.co.uk/itm/2007-MERC...089725?hash=item2ca20974bd:g:MikAAOSwQPlV~8i7 work - it's a different part number but looks similar.

Thanks,

 

[Sgreen3305]

Thanks for the advice here- just joined the forum, I have a clk 320, the fuse box is behind a single panel in the boot.
I presume it's the same routine on my car. I plan to have a go this weekend - however, I,d like to ask for some more advice.
I'n not keen to disconnect the battery, having done this on an Audi, and being stuck without a radio because it needed a code number to re-start it. Also I have seen some comments about things that have to be done to re- boot the merc.
Is it really necessary to disconnect the battery? Why not just take out the fuse?

Grateful for any further help.

Stuart

 

[whitenemesis]

AFAIK a 2006 audio unit won't have a security code. Even if it does your MB dealer would be able to supply the code, presuming it's a factory fitted unit.

Disconnecting the battery wouldn't have any deleterious effects with only a simple reset required for the windows and sunroof, all in the owner's handbook

 

[Sgreen3305]

That's good news - but, what about just removing the fuse?

 

[Sgreen3305]

Done it !

Gents, thanks for the advice, just saved a fortune!

I couldn't get the rotor out of the motor body, which meant a risk of damaging the brushes, so I used two threads to draw them apart, as per pic

S

 

[Sgreen3305]

Another pic

Ran other pic of threads

 

[MercieOzzie]

Thanks, this is has been really great. I used the instructions in here, and worked flawlessly.
Also the tip by Sgreen3305 to use wires to pull the brushes back worked brilliant, as that avoids having to take the whole thing apart.

I used a small flathead screwdriver to brush off the black stuff.
One thing that did strike me was how little of black guff it apparently takes to make this motor stop. When I opened it up, it was not like a massive amount of stuff I had to remove. Just the blackening on the rotor.

Additionally, mark the air lines when you take them off, so you remember which one goes where.

For completeness, I have an 2006 R500, the pump is in the boot on the left side, left of the spare wheel.

Have also added a few pics for the next person as additional help.