Seeking help with 1985 500 SEC - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 07-30-2010, 07:58 AM Thread Starter
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Date registered: Jul 2010
Vehicle: 1985 Mercedes Benz 500 SEC
Location: Oxford Mississippi
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Seeking help with 1985 500 SEC

Hello all, I am new here. I have never owned or driven a Mercedes and I just inherited a pretty rough 1985 500 SEC and am not sure just what to do with it. My main question is about starting it. The person who left it to me demostrated how to start it by moving the console shift lever from park to all the way down then back up to N, over and over, sometimes mashing the brake pedal. It takes anywhere from 5 to 15 minutes and all of a sudden it will crank. I know he would sometimes set the alarm/door locks from the truck keyset. That is how I unlock the doors. I am an old school farm raised wrench hand and I only fool with antique trucks, tractors and motorcycles and not familiar with luxury autos at all. I am not fearful of auto electrical systems. I assumed the neutral safety switch was worn or defective but he said it was an alarm/start-disable situation and that I should pursue the alarm system instead of unplugging or jumping any gear or gear lever switch. It runs and shifts fine AFTER cranking. I really would like to sell it but when it won't crank, no one has any interest. In the $1500-2000 range. Thanks, Paul
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post #2 of 3 (permalink) Old 07-30-2010, 04:14 PM
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Date registered: Sep 2009
Vehicle: 72 280SE 88 560SEC 92 E500 6.0 95 SL320 14 GLK350
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Hello Paul, and welcome.

What you have described is definitely not a proper way to start a Mercedes.

You might have a faulty safety switch, which prevents the car from starting in gear.

I suggest you go through the w126 section of this forum, which covers everything about your 500SEC.

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post #3 of 3 (permalink) Old 08-01-2010, 10:32 PM
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