Hi, i have quite a few issues with my S124 that i would like to get sorted out:

1. The oil pressure gauge is acting weird, when the engine is cold it shows the pressure correctly but when the engine get warm and i make a sharp turn the oil pressure drops to zero and stays there until i drive over a bump or something like that.

2. The outside temperature sensor, when i start the car it shows for a few seconds that theres -38C and then the display just goes blank.

3. Last week i bought my car headlight washers, the full set, but i couldn't find a wiring diagram anywhere, can someone tell me how to wire them correctly ?

4. The cruise controll on my car doesn't work, i've read that the typical issue is with the AMP and i just have to resolder every connection there? Everything on the cc lever is in german so i don't actually know how to turn the cc on but i've tried moving it anyway it goes and it doesn't do anything

5. The SRS light in my dashboard is on constantly and my horn is also not working, i read somewhere that these things are somehow connected, but i couldn't find anywhere how to fix this

6. And finally my cars sunroof only tilts and doesn't slide back, when it tries to slide back it gets stuck somehow, is this a common issue and what could be the cause of it ?

I would be realy happy if i could get anwsers to atlest some of these problems , also i am from estonia so excuse me if my english is bad, thank you

1: The oil pressure sender is pretty famous for taking a dump. It is electronic and over time, they fail and wear out. That should be your first replacement before diving into the engine.

2: You could have a failure of the module in the instrument cluster, or you could have a broken wire or defective sensor in the front bumper area. You need to get a copy of your factory service manual and trace the wiring out.

3: See the latter part of Point #2.

4: Up is accelerate, down is decelerate, pulled towards you is resume, pushed away is cancel. Resoldering the board and replacing the electrolytic capacitors will restore functionality is many cases.

5: You could have problems with the brushes and slip rings in the steering wheel, or you could have 2 different problems. If someone has been in the steering wheel before, they may not have reconnected the airbag.

6: Sunroof getting stuck is a very common issue. Almost always due to lack of lubrication or missing felt sliding pads. Don't force it. There is a good video series about sunroof R&R on a website called Mercedes Source .com (put that all together and that's the website).

Don't apologize for your English skills, they're a lot better than a lot of native speakers communicate on these forums!

__________________
Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)