M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Turn Signal (Indicator) Flash double speed

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Old Feb 18, 2006 | 04:37 PM
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Mercedes ML 270 & Audi TT
Post Turn Signal (Indicator) Flash double speed

I have a 2002 ML270 CDI - with an intermittent turn (signal) indicator problem. After about 5 minute driving when you indicate to turn (either direction) the turn signal flashes double speed. It is as if a bulb has blown, but all 3 bulbs are working. I have replaced the relays. Has anyone come across something like this before, Thanks.
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Old Feb 18, 2006 | 04:42 PM
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From: Copenhagen,Denmark / Malmö, Sweden
'97 W202 C180 aut. Elegance Former : '99 W202 S500 w. keyless go, carlsson lowering kit.
If you have a towing hook on your ML, and the power for the socket back-there is on, the turn signals gets messed up if nothing is in the socket..

At least it did on my friends ML 270CDI final edition.


Hope it helped... :p
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Old Feb 18, 2006 | 04:53 PM
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I do have a tow hitch, but I have disconnected the electrical trailer connector from the wiring harness inside the car, but still get intermittent problem, Thanks.
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Old Feb 22, 2006 | 08:36 AM
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2000 ML430
Originally Posted by Osprey
I do have a tow hitch, but I have disconnected the electrical trailer connector from the wiring harness inside the car, but still get intermittent problem, Thanks.
Check for a blown bulb. check all of them.
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Old Feb 22, 2006 | 09:18 AM
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00 MB ML55, 91 Toyota Supra Turbo(sold), 06 E500(gone), 03 BMW M3
that could be it, I think that some cars do that in order to signal to the operator that a bulb is out, they dont put a lamp out bulb on the dash board so that could be your problem
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Old Feb 22, 2006 | 10:47 AM
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2001 ML320 Sport
Are you running LED bulbs anywhere by chance? That will also do it.
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Old Feb 22, 2006 | 03:24 PM
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00 MB ML55, 91 Toyota Supra Turbo(sold), 06 E500(gone), 03 BMW M3
wait a second!!! Is the blinker fluid level low?
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Old Feb 24, 2006 | 09:39 AM
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Originally Posted by exexpat
Are you running LED bulbs anywhere by chance? That will also do it.
All bulbs are working both sides - not sure about them being LED
bulbs - those fitted are as standard, Thanks
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