Top 20 1990 Mercedes-Benz S-Class Questions & Answers


its probably a broken wire on the seat belt system you will need to get it plugged into a merc star computor to fully diagnose

1990... | 83 views | 0 helpful votes


check the mass air flow sensor and air filter

1990... | 105 views | 0 helpful votes


Hi

The door switch in one of your doors is faulty... The switch that triggers courtesy lights when door is open then disables light when door closes.Also check did you turn it on with the interior dimmer control on your dash, left side of the steering wheel?

You may need to replace the latch mechanism in the door. But more than likely it is just stuck...if i am not mistaken; it is a magnet system so it just got jammed. All you have to do is spray the **** out of the door hinges and door looks with wd40 or some other spray. Actually the problem is that there is a sticky switch in the door latch mechanism. This switch is telling the computer that a door is open, even when it is not. Keep in mind that it may not be the driver's side door that is at fault, so you might want to do all 2 or 4 doors, depending on your model.
At each door you will see the latch mechanism. Just above these latches inside each door is the switches. To unstick these switches you will need 2 types of spray lubricant. Use WD-40 (or equivalent) and a can of silicon spray lubricant.
With the plastic tube attached on the WD40 you will spray inside the latch and in between the latch to get the spray to lube the switch. Flooding is preferred. Go to each door and do this. Open and close each door multiple times until the switch is free and the indicator lamp goes off.

Please get back to us if you have further query or else please accept the solution.

1990... | 17 views | 0 helpful votes


loose aux belt ?

1990... | 37 views | 0 helpful votes


Hi:
I am pretty sure you are asking about a part called the heater core.

It is what gets hot ,and your fan blows across it, providing heating and defrost.

1990... | 114 views | 0 helpful votes


There should be a piece of paper in the fuse box that says fuse for flashers.

1990... | 176 views | 0 helpful votes


Have you checked for blown fuse in panel.

1990... | 822 views | 0 helpful votes


Try the fuse first. If you have done this than the problem could be in the actuator on the trunk latch. Poss loose/bad wire or faulty unit? I hope this helps!

1990... | 800 views | 2 helpful votes


hi,300 s, with engine 6 cylinder ,jack-up your car for drain plug, 7.5 liters of oil change oil with filter,ty

1990... | 98 views | 0 helpful votes


wont till the timing is set

1990... | 49 views | 2 helpful votes


my specialist electrician said the problem was in the button (on-off)of z A/C ON Z panel of z driver.By z way my car is 1992.WHEN Z ENGINE GETS HEATED THE 2 FANS WORK FASTER AS ZEY USUALLY SHOULD DO.ZEN ZEY SLOW DOWN TO NORMAL SOFT SPEED.HIS DECISION IS TO LEAVE IT LIKE THAT AS IT CAUSES NO HARM.BEST GREETINGS TO YOU ALL.

1990... | 114 views | 0 helpful votes


Sounds like you have blown a hydraulic hose that operates the top mechanism. You will probably need to find a local mechanic that is experienced with hydraulic operated tops or a dealership. But check you owners manual. Most manufacturers have a manual way of operating the top to allow you to secure it until repairs can be made.

Mercedes-Benz... | 27 views | 0 helpful votes


It probably lost the rolling code, you need to find your owners manual and reprogram the system with your garage door opener, or the learning button on your garage door unit.

Mercedes-Benz... | 33 views | 0 helpful votes


If you're finding it difficult to service/repair your car, get one of those online manuals. You'll not have to wait for others to answer, or rely on mec hanics and all. Plus i know a website that sells very cheap but very very good manuals online, without expiry i.e. for lifetime.
for this u can try reliable-store which is pretty good

Mercedes-Benz... | 40 views | 0 helpful votes


I think you could use this manual method instead.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from. reliable-store

Mercedes-Benz... | 76 views | 0 helpful votes


Remove the supply tube under the nozzle and see if you have pressure. If you have the jets are blocked. If you have no pressure, the pump has failed.

Replacing the pump
https://www.google.com/search?safe=off&ei=bDCIXKqNFIfEjgTqrZjACg&q=mercedes+windshield+washer+pump+replacement

Mercedes-Benz... | 27 views | 0 helpful votes

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