Strange Starting Problem - 03 E500
My '03 E500 is exhibiting a really strange problem lately (35k miles, orig owner). It has absolutely no problems during a cold start, but when trying to restart after sitting for about 30 minutes (engine still warm), the starter spins as normal but it doesn't catch. It will take three or four attempts to finally get it to start, after which the check engine light will stay on until an additional 4 more starts occurs (light then goes off). Car runs normally after starting - no hesitation or power loss whatsoever. Symptom started about 4 weeks ago. Anyone else experience a "hard" start condition when warm?
Thanks for any help you can provide.
Wow! Awesome answer!
I'm trying to learn some DIY of the E500. Flat 6 mentioned he was getting the ck. eng. light. With an OBD II scanner, he could pull codes and determine his problem correct?
(Now I'm gonna search for cps and see how to change it just for my knowledge. Good luck flat 6 and tks csumt76).
I have seen a couple instances where a bad camshaft position sensor will not allow the engine to start. In every case, the check engine light was also illuminated. The reason that I say crankshaft position sensor, is because of the relation to heat.
For ****s, you can remove it and test it. Put an ohm meter on the two pins of the sensor and heat it up with a heat gun. You should read around 1200ohms resistance through the winding. Once the sensor gets hot enough, you will get an open circuit which would make your engine not start or die while running.
The fault code will associated with the light will pin point the problem easily.
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If you can DIY just as effectively as the dealer, why go to 'em? In fact, the wrench-handy owner will prolly do a better job bec. its his car...
flat6, keep us posted and good luck!
Ticking command unit: the single cd would just randomly start going through a fit on its own. The dealer should have replaced this unit since day one, but instead opted to "update software" about 2,000 times. One time they call it "normal function". Yeah, if loud ticking in the middle of a song is normal, please advise. New unit now in and problem solved.
Binding in steering: again a long standing complaint, finally resolved with a replacement of the airbag sensor wire, which was wrapping around itself while turning.
Misaligned center console ashtray, again a long standing complaint since day #2. Attempted fixes for the last 6 service visits over 4 years. Now resolved at a 95% accuracy level.
Wheel Clearcoat erosion - around center cap area of three of my wheels, clearcoat is losing it. MB declined warranty citing "washing techniques". Dealer kindly replaced worst wheel as act of good faith. Funny, the washing techniques on my other two Porsches apparently haven't resulted in a meltdown of those rims, but hey, maybe I'm just a screw up.
I think most of the kinks are starting to get worked out at this point. After the CPS that is....
Thanks to all that are helping out!
I have seen a couple instances where a bad camshaft position sensor will not allow the engine to start. In every case, the check engine light was also illuminated. The reason that I say crankshaft position sensor, is because of the relation to heat.
For ****s, you can remove it and test it. Put an ohm meter on the two pins of the sensor and heat it up with a heat gun. You should read around 1200ohms resistance through the winding. Once the sensor gets hot enough, you will get an open circuit which would make your engine not start or die while running.
The fault code will associated with the light will pin point the problem easily.
Last edited by vettdvr; Nov 30, 2007 at 08:15 PM.
Wheel Clearcoat erosion - around center cap area of three of my wheels, clearcoat is losing it. MB declined warranty citing "washing techniques". Dealer kindly replaced worst wheel as act of good faith. Funny, the washing techniques on my other two Porsches apparently haven't resulted in a meltdown of those rims, but hey, maybe I'm just a screw up.
Thanks to all that are helping out!
Last edited by Flash Gordon; Dec 4, 2007 at 08:30 AM.



