Question about 1985 Mercedes-Benz 300
An auto electrician was replacing the flicker switch as the indicator wasnt working. However he stuffed up the electric windows and now they work properly and he doesnt know how to fix it. I have to take the key out of the ignition to open the windows but that doesnt always work and it shouldnt when the key isnt in the ignition.Or sometimes if I open & close the door it will work. I have a 1985 Mercedes 300E does anyone know how to rectify this problem?
The switch contacts on this model become dirty and the internal plastic in the switch breaks. Although the opening and closing doors sounds like the wiring harness in the door cavity is worn and the wires are stretched or broken. Check them both.
Posted on Nov 14, 2017
Yes get another mechanic to fix it and give this numpty who broke it the bill why should you pull out money for some one elses mistake
Posted on Nov 07, 2017
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Posted on Jan 02, 2017
Use your door key and unlock your drivers door ... that is what disables the alarm system. Make sure that the battery is rehooked... because i'm sure you took the battery loose when you couldn't get the alarm to turn off.
Posted on Nov 17, 2008
neto 190D: You are asking about a vacuum diaphragm?
I'm going to take a WAG.. Your engine won't shut
down with the key?
If so, he is the way you find out:
In your injection pump, the vacuum diaphragm which kills the engine is the one which has the fitting pointing parallel to the ground.
The vacuum line which serves it is a brown/blue
To check the system, first check for vacuum in the line. Run the engine for a minute or so. Cap off the brown/blue line.
Turn the ignition switch off and then with hose in hand, uncap it and you should hear a hissing sound. If you have a vacuum guage, obviously, use it for the test, you need a minimum of 10 inches to kill it.
To test the pump diaphragm, you can rig a vacuum line to a known vacuum source close to the main "T". Run the engine and with the line connected to the diaphragm, connect it to the good vacuum source, if it kill the engine, the diaphragm is good. If you have a hand vacuum pump it would be more ideal, because you could check the diaphragm for small leaks.
If the diaphragm is bad, it is easy to replace on the pump.
The shutoff diaphragm lists for $86.00
Is my shot in the dark correct?
Even though I am a Nissan Master tech, I also specialize in Mercedes-Benz and specifically Diesels, so if you need help, I'm here. I went through a few Mercedes Schools and have been swinging Iron in Mercedes since the 70's
I might be a little more informative than the public library.
Posted on Apr 24, 2009
First the sensor in the rear gearbox may be bad or corroded for sensing wheel speed. Also the engine wiring harness may be falling apart. From 1991-1995 the US made MB use biodegradable material on the wiring. When the insulation cracks you get shorts in the system. The same wires are in your EHA on the air inlet area. Check and replace as needed.
Posted on Jun 16, 2009
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