New Member ex BMW owner. My S 600 will not crank
1) It showed codes with none of the left bank cylinders firing.
2) It Showes the ESP malfunction on the display
3) It shows a SRS malfunction on the display
4) The radio and speakers do not work
5) The ESP off button does not seem to work. ( not sure what it should do. lol) Maybe turn off the ESP fault?
6) The 'sport' mode button stays on constantly after i push it many times.
7) All lights and every thing else works fine when i turn of the key but no crank or engine turning over with key turned all the way.
Also i have no known blown fuses. But still must check if all fuses are receiving power.
I removed the voltage transformer and fixed three vacuum tubes and also the map sensor near the voltage sensor.
I have jumped the starter relay from pin 87 to pin 30 and the starter turns over easily.
So i need a little guidance in starting to eliminate things to find the culprit.
Thanks in advance for any and all help here. I have read a lot of threads about my problem and know there are many helpful posters here.
After this it will not even crank. The lights go on and everything seems to work. Except the radio and the 'sport' button is stuck on. Also the ESP off switch does not seem to do anything. But i'm not sure what it should do to the ESP malfunction if you push it. Maybe it does nothing with the car off?
Anyway. The main thing is it will not even crank with the key all turned to start it. It did before i fixed some vacuum hoses but not any longer. Engine does not crank. I jumped the starter relay and the starter does great.
So i ordered another relay and also have wondered if i should purchase a set of shifter, key, engine ecu, transmission ecu. I found some on ebay for a w220 but it says for a s 430 or s 500. Will they work for my s 600?
Or what other troubleshooting should i do? I will be purchasing a star diagnostics in a week or so but while waiting i'd like to do some troubleshooting.
Thanks for your quick response tusabes. I've read a lot of your stuff lately.
The other issue is the diagnostic port is not communicating either. Maybe this will be another hint for some of you that have dealt with this issue? Thanks for any help.
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"...and the fuses under there look good." I hope that you mean, "I carefully tested the fuses and their connections and they are passing full power." A visual inspection doesn't do much...
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Last edited by mercy-me; Nov 2, 2017 at 11:52 AM. Reason: clarity
Then i tested the relay and did not feel it clicking when put into the starting position. Position three i think. But i also put the volt meter on each of the pins and had someone turn the key to each position. Here is what i have:
As I said i can crank the engine jumping the pins 30 to pin 87.
With the volt meter: Pin 30 or 3 shows 11.920 volts
Pin 87 shows nothing as i suppose it should until connected
Pin 87 a shows .002 volts
Pin 86 shows 4.22 volts when the key is turned to crank the engine.
Pin 85 shows .,904 volts
I hope this helps. I also tried moving the shifter into each position holding the key down in the start position. I have to do this on my swather i cut hay with. lol So i tried it on the car. Mercedes are a bit different than a Case swather though. lol
Thanks again. I value your help.
Last edited by rottenrick1969; Nov 2, 2017 at 05:29 PM. Reason: correction
I have worked on BMW cars more and this is my first Mercedes so i'm learning as i go. Thanks a lot for your help. Now i am back to my original problem. I will start a new post for some advice on this one too.






