Question about 1989 Mercedes-Benz 300-Class

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Mercedes 300 se

Not starting

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  • johna77 Feb 13, 2009

    where is the fuse for the gas gage, speedometer, tach?



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Fuse in relay behind battery may be the porblem

Posted on Jul 13, 2008


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1 Answer

Were is latch to open fuel door in Mercedes 300 se

try pushing on fuel door (push on side closest to front of car)

Sep 12, 2011 | 1988 Mercedes-Benz 300

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I have a 1993 300 SE with a dead battery. I noticed the grounded terminal is positive. Aren't most vehicles gounded from the negarive terminal? I want to make sure I install the new battery properly.

All Mercedes are negative ground and you should be able to follow the ground terminal a short distance directly to the body.. Do not hook it up backwards.

Feb 05, 2011 | 1993 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

I have a 1992 mercedes 300 se the ASR LIGHT GOES ON

Cable binding, do not press gas when starting, speed sensor on the wheel could have failed or be dirty, ASR module could be bad, upper engine wiring harness could be failing. Go to benzworld dot org or peachparts dot com for more specific help and guides.

Jun 18, 2010 | 1992 Mercedes-Benz Mercedes Benz S Class

1 Answer

Where can I find a diagnostic computer plug for a 1989 mercedes benz 300 SE?

It is over by the battery, go to or on how to make a code reader and how to read the codes you find.

Apr 29, 2010 | 1989 Mercedes-Benz 300-Class

1 Answer

1993 Mercedes Benz 300 SE

engine wiring harness upper and lower could be degraded, coil could be bad, throttle positioner, fuel distributor could be bad and depending if its a half year car and you have an OVP that could be bad. Also after a full tune up have someone adjust the duty cycle.

Apr 14, 2010 | 1993 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

Mercedes 300 se no reverse when cold 1/2 mile later when gearbox is warm i have reverse all day

Check and make sure that the transmission isn't over or under filled. If not, the clutches that operate the reverse gear Are probably too worn, and don't operate until they are expanded by heat.

Nov 06, 2009 | 1992 Mercedes-Benz Mercedes Benz 300 Class

1 Answer

My 1988 300 se wont start. turns over and may

The fuel shut off valve is not getting the correct amount of vacuum OR the fuel shutoff valve is failing.

You will need 1/2 to go over EVERY SINGLE vacuum line and check for leak.

Even it's look OK. Give it a little push to ensure 100% seal connection.

If this does not help then the vacuum switch next to the steering lock (behind dash) may be leaking or failing.

The switch is about $36 from the Mercedes dealer.

Good luck

Jul 15, 2009 | 1988 Mercedes-Benz 300

1 Answer

My 89 mercedes se 300 keep dying while driving. I stop and wait a few minutes and it start again. It happen more often now. Anyone can help to find the problem? thx

hello,you have a 300 se with 103 engine (straight 6 cylinder) we have two possible cause of the problem,fuel and ignition side,on workshop they have a fuel gauge to check the fuel pressure (filter,fuel pump,fuel pimp relay) on fuel side,then for ignition spare plug,distributor cap, rotor,switching unit (transistor box for ignition side,ok, when your engine stop,try to hear from the rear,if your fuel pump motor is working,or you can remove your spare plug to determine what is missing fuel or ignition,ty

May 03, 2009 | Mercedes-Benz 300-Class Cars & Trucks

1 Answer

1989 300 SE Mercedes A/C Problem

Ok that changes thing, is the low pressure line from the compressor getting frosty cold?

Sep 21, 2008 | 1989 Mercedes-Benz 300-Class

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