Passenger seat-- does not recline back AND bottom cushion does NOT move backwards.... all other directions work

Can anyone offer checklist of 1st things to check as causes/fixes???

thx

Read the diagnostic trouble codes first.
Look at fuse chart to verify fuses good.
Those should point you in the right direction

__________________
92 e300d2.5t
01 e320
05 cdi
85 chev c10

Most likelihood is the switch.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

No codes or CEL... right now

There is a message about the passenger Head rest... which ironically works as it should?

I will look into fuses...

Did some research... some say there is a way to re-synchronize the seat settings??? on some MB models?>

Generic OBD2 scanner is useless for this. Get an MB specific scan tool that can read codes from the seat computer.

__________________
CENSORED due to not family friendly words

CEL is for engine problems. To synchronize the seat everything must be in working order. The seat controller is under the seat and is a candidate for failures but get a mb scanner and read those codes.

__________________
92 e300d2.5t
01 e320
05 cdi
85 chev c10

This is not like the older models. The seat switch in the door has no direct connection to the seat motors.

When you move the seat switch, you place a message on the CAN-B bus that you would like to move the seat. The seat controller listens for the seat move commands. If it decides it is safe to move the seat (I.e. the seat is not already at the travel limit, is the headrest/backrest angle such that the headrest is not going to hit the roof) then the seat controller commands the seat to move.

If you can get access to Xentry then you can go into the door controller actual values and see if it is sending the commands to the seat controller. Also you can go into the seat controller actuations and command the seat to move. This will tell you where the problem is.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Is Foxwell 520 capable of reading/resetting codes from the seat comp?

So ... most likely- NOT seat motor?

but fuse/or proximity sensor/ or switch? which communicates with Comp

Yes

__________________
CENSORED due to not family friendly words