Greetings ladies and gents,

I've had my S500 as a daily driver for a few months now and as part of general upgrades I'm doing I'm replacing the worn looking steering wheel control buttons (they're still functional, just look worn). However, I am unsure of how to remove the existing units without damaging the steering wheel. anyone do this before or have a PDF of the procedure you can send? Do I have to remove the airbag to make the swap?

Thanks in advance for any help, and I love this car.

LR

 

2 small torx screws on underside of wheel, recessed into 2 small holes. Remove these and wheel center/airbag unit will come off. Recommend (but not necessary) disconnecting battery first to prevent accidental deployment of airbag.

 

Magnified, can you tell me where you get the replacement buttons and how much they cost? Do you have to buy the whole control unit?
Thanks

 

Hi crankin,
Check out this site http://www.starpartz.co.uk/catalogue...cessoryID=1566 MB Part number is A2208207810 and I am sure they will ship to the U.S.

 

I got them from Phil. I'll find his link here somewhere. Here we go: MercedesShop.com, LLC

Much cheaper than the dealership, by far. And they're brand new in the MB box shipped from Germany.

LR

 

Thanks Lloyds, I owe you.

EDIT: another quick question: what kind of resets do you have to do if you disconnect the battery? On some vehicles that will lock many things down. Thanks again, if you know.

LR

 

Magnified, can you tell me how much they cost? Yesterday, I placed an order at the dealer for $200. I can cancel if thats way too much.
Thanks

 

Not enough cheaper to make it worthwhile to cancel. The dealer I use here is a bandit.

LR

 

Here you go Magnified.

This was originaly posted on the forum, but I cannot remember by whom (hopefuly someone will give the credit to the correct forum member).

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First, the ECU reset procedure is included in the owner's manual in the battery change instructions - along with some additional info on things that may need to be reset (it helps to read those manuals!!) However, not everything is addressed there, so here goes.

Windows, seats, mirrors, steering wheel position (easy entry/exit) and the like can be reset by running them fully in one direction, holding the switch at full travel for approximately 2 seconds (or longer), then running to the opposite limit, holding for about 2 seconds (or longer). It is not unusual to have to do this after the battery is disconnected. The positioning of many of these features is controlled by a Hall's Effect generator, a simple device that counts revolutions of a motor shaft, and it must be set to register the proper number of turns to reach both limits of travel.

Synchronizing Head Restraints:

If the power supply was interrupted (battery disconnected or empty), the head restraints are no longer adjusted automatically. To resynchronize the adjustment feature, turn electronic key in steering lock to position 2, move the seat completely forward and the head restraint fully down, and hold respective buttons for approximately two seconds.

Synchronizing power windows:

If the power supply was interrupted (battery disconnected or low), the windows cannot be opened or closed by the Express feature. To resynchronize the express feature, press side of power window switch to resistance point until the window is completely closed and hold for additional 2 seconds. Repeat procedure for each window. The automatic full opening and closing procedure of the windows should now be restored. (Note: This sometimes works as well for problems with manual operation of the windows, but not always).

Synchronizing sliding/pop-up roof:

If the power supply was interrupted (battery disconnected or low), or if the sliding/pop-up roof is blocked during closing/opening procedure, the system has to be synchronized. To do so, turn electronic key in steering lock to position 2, move and hold switch in direction (3), until the sliding/pop-up roof is completely raised at rear, and hold for additional 1 second.

Synchronizing ESP (ECU):

If the power supply was interrupted (battery disconnected or empty), the BAS/ESP malfunction indicator lamp may be illuminated with the engine running. Turn steering wheel completely to the left and then to the right. The BAS/ESP malfunction indicator lamp should go out.

Synchronizing remote control:

The remote control may have to be resynchronized, if the vehicle cannot be locked or unlocked. To synchronize insert electronic key in steering lock. The remote control should once again be operational."

Synchronizing Steering Column Height/Easy Exit:

Steering wheel height - basically the same procedure, but with a caution. Move your steering column down SLIGHTLY, and if you can then bring it back up to where it started (but not higher), then you need to reset the column with the simple procedure below. HOWEVER, if it goes down slightly, but will not go back up at all, do not try the reset - it probably will go fully down and not come back up! You may not be able to get into the car to drive, if that happens. Get it serviced.

Run the steering column full down, and holding the switch down for about 10 seconds after it reaches the lowest position; then run it back up fully and hold the switch up for about 10 seconds after the column reaches its upper limit of travel. You may need to do this several times. That should reset the limits in the Halls' Effect generator, and your column should function normally.

Seats (easy exit) - try running them to the limits also; however, the seats slide back in the easy exit mode only if they are pretty far forward in the first place. if they are back beyond certain limits (set by Mercedes), not sliding further back is normal operation.

Not all cars have easy exit, and for those that do it must be selected in the MFD (instrument cluster) menu.


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