Weird Start problem with my 2010 ML350 4matic, 38000 Miles.

200

Asked by Aug 28, 2015 at 12:14 PM about the 2010 Mercedes-Benz M-Class ML 350 4MATIC

Question type: Maintenance & Repair

Weird Start problem with my 2010 ML350 4matic, 38000 Miles.
Often when I turn FOB key to ON position no display light and no lights on cluster and car can't start. I have to take the key out, put it again and turn no lights, no cranking, so often have to do that a few times to start car. Sometimes car starts immediatelly and works normally, but often before cranking no lights on cluster, though when i start and turn off the car, cluster display lights appear normally. The second spare FOB key works the same. It happens more often when the car is parked for few hours, days or longer.
FOB Key batteries are recently replaced, locking and unlocking, panic and trunk button does work properly on both key fobs. The auxiliary battery reports dead and needs replacement
What may be the issue, and how to fix it?

7 Answers

230

Might need a ignition control switch

11 people found this helpful.
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How to test the EIS switch/immobilizer, and rule out the key fob problems?

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230

Sometimes can take the battery cables off for about five minutes.it lets the computer drain out the bad and reset .after five minutes hook battery back up and try it then .if not and a check engine light is on try to get a scan from local automotive parts dealer .

6 people found this helpful.
200

What usually cases driver authorization failure, common problems and solutions

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10

Have you resolved your problems? I'm experiencing similar issues

1 people found this helpful.
15

i have exactly the same car (2009) and problem!! These computer issues are just beyond the pale. I have a W124 with 250k and none of this rubbish - ever! PLEASE - how did you sort it??

1 people found this helpful.
20

Hello guys,I have a 2005 ML350 and exactly had the same problem good battery no crank,no start problem,,,,,so far I have replace the agm battery and had my starts rebuilt an d still have same problems only this I'm focusing inside the fusebox where the igtion col slay is located I remove and check and tests good I put it back on and my car started realy good drive t around and shut it down and restarted no problem,,,,, if I let it sit for an hour or so it won't start I have to remove the relay for 5 min put it back and always start,,,,,I am really puzzle with it ,,,my next move is to replace all relay and will post he result ave a great day

2 people found this helpful.

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