2002 mercedes C320 installed 2 new modules. Right side controls don't move seat but left side works but when left seat moves ahead right side moves back and vice versa. Stumped!!!!!

Did you replace them ? If not working correctly you probably need to replace it. Do you hear a clicking noise behind the dash ? Does your buick have manual or automatic climate control ? You say blend door actuator ? right or left ? Or mode door ? Mode door would be for moving from floor to vent to defrost . Blend door actuator is Temperature Valve Actuator right or left side.
After replacing one , their is a Actuator Recalibration that must be done . One using a professional scan tool or one that doesn't need a scan tool

Calibration Procedure without a Scan Tool
Turn OFF the ignition.
Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module.
Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.
Wait 60 seconds.
Install the fuse.
You probably don't know where the I/P control module fuse is ?
Fuse is located under the rear seat , left side . Fuse # 37 10amp . HVAC (BATT) .

yes but you will have to do it on a dead flat surface facing a garage door or something there are adjusters on the rear of the lights with the lights on just turn them untill the reflection on the door moves up or down

Try this To get to it is complicated


Move seat as far back as possible. Seat rails have covers on them - slide them forward....the left one will only slide forward, cannot be removed. Between the two seat rails you will see two little battery cover mounting nuts. Use 6 mm T-handle hex key to remove the nuts. Move seat as far forward as possible and twist rear rail covers to left and right and then pull toward rear of car. Pull back/fold floor carpet under seat from front to back (carpet is perforated so you may have to really yank the first time). There are two more battery cover mounting nuts between rear seat rails. There is a battery cover with an air vent pull it slightly to right and then lift out. There is a vent hose attached to battery on left side -- pull it out. Unfasten & remove attachment nuts on left side (low). Remove the battery attachment once those nuts are off. Push battery to the left. Disconnect battery negative lead (right) (do not let it touch pos. lead on left). Remove cover from pos (red/left) terminal and disconnect lead.

POSSIBLE DEFECTIVE POWER SEAT SWITCH.

There is a cable that goes from the motor mounted on the right side rail that runs to a small gear box on the left rail, more then likely the cable has popped out of either the motor or the gear, it’s flexible and can be popped out fairly easily, even having bottles under your seat can cause this problem..

Just replaced my key the ignition switch and the esl in my c230 98 Benz. Worked for about a week and now the esl will not unlock the steering or start the car. Is there any way to reset the esl? All three components are new I don't understand the problem .what causes the esl not to engage when you put the key in the ignition

On ABS light most common problem is ABS control module , they failing left and right.
As for the seat adjustment , sound like you need a new seat switch.

The set on the passager side of my 88 420SEL wont move up, and it make a noise about every 15sec like it is trying to move.

The d.c.m module( your seat switch) controls the window operation and seat operation. It also relays signals to other control modules on the data system. does any other components not work? You can unplug certain connecter but not the main can connecter to the data bus. For the hell of it check the fuses. I beleive your schematic is located in the left side of the dash(behind plastic cover) visible when door is open. If not refer to owner's manual where the fuse schemstic is. good luck

There are plastic gears connecting the track to the seat assembly. Whne one of these strip the seat will only work or move to one side. Infiniti does not sell a simple fix. You are looking at buying an entire seat assembly complete with the module for all the electronics. It will be at a cost of around $950 - $1000. Once that is in, Infiniti must program the seat to the brain of the car, only then can you reset your memory settings.