Anouther Start Error 2001 Slk320 - Mercedes Benz SLK Forum
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#1 Old 09-17-2010
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Anouther Start Error 2001 Slk320

I'm currently working on a 2001 SLK320 NON-kompressor and have run into the Start Error. I Currently have no crank from the vehicle, sometimes I can get 2 to 3 seconds before the message pops, I can also hear the pump in the rear cycle priming the fuel system. Checking the computer with a scan tool i only get the U0500 and U0900 codes, no cam codes. I looked around and found out that the K-40 relay is common with this message, when pulled all the joints were still in tact and had no corrosion. The oil was just changed if that is of any relevance. Any suggestions? Ive tried looking around but haven't found many more answers, sorry if I missed a topic already about this.

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#2 Old 09-17-2010
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#3 Old 11-19-2011
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I realize this is a very old post but wanted to add to it for search assistance for others like myself that had the same problem. I had this problem once every every 5-6 months over the last 2 years. I also got a 'Start Error' in the Odometer and no codes. If I waited 15-20 min the car would eventually start.

This last time even after waiting an hour plus it wouldn't start and I had it towed home. I found that the chrome ring that holds the ignition switch into the dash was a bit loose. I was not able to turn it clockwise to tighten it but turning it counter clockwise worked and Voila! the car immediately started.

It still doesn't seem as tight as I would expect so I am going to research it more. Other possible issues I found while researching this was an erratic or bad DAS control module or the key fob itself was intermittent or dead. I was in the process of ordering a new key when I happen to notice the loose trim ring.

Hope this helps someone else.
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