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Mercedes E-Class goes into Park when slowing down

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E-Class (W212) 2010 - 2016: E 350, E 550

Mercedes E-Class goes into Park when slowing down

 
Old 01-31-2019, 06:36 AM
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W212 e class
Mercedes E-Class goes into Park when slowing down

Hi guys I wonder if someone can help me out there I am having problems with my Mercedes E Class w212 when slowing down it just throws itself into Park with no warning lights or messages. It doesn't happen all the time it comes and goes I have had my main battery changed and had it programmed in and for a week I did not have a problem.
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Old 01-31-2019, 09:58 AM
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By chance are you pulling the door handle while the car is still moving as you slow down? Doing this will immediately place the transmission in Park.
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Old 01-31-2019, 10:07 AM
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Originally Posted by GRock View Post
By chance are you pulling the door handle while the car is still moving as you slow down? Doing this will immediately place the transmission in Park.
I'm I'm doing nothing at all like that my hands are on the steering wheel at all times....
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Old 01-31-2019, 10:18 AM
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OK, but it may be there is a door switch that is out of adjustment making the car think a door is open while moving. If you have this happen again, take notice if the overhead lights come on at the same time the car goes into park. If so, the switch may need adjustment. If not, there must be other conditions that make the car think it is in a door open condition, and there may be other sensors that cause it to go into park. Maybe some of the MB experts on here have an idea what is causing this. It can't be good for the transmission to have this happen often. Good luck with the diagnosis.
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Old 01-31-2019, 12:00 PM
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If VIN is below A776831 see attached bulletin ignition switch may be faulty.
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Old 01-31-2019, 01:01 PM
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Thanks guys got it booked in on Monday . Will find out what the problem is and let me know thank you for your help.
Someone did someone did mention radar sensor control module could be faulty.
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Old 01-31-2019, 01:08 PM
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Well, please keep us posted. That's a frightening situation to have.
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Old 01-31-2019, 01:56 PM
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I will do will get back to you very soon thanks .
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Old 01-31-2019, 05:02 PM
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Originally Posted by konigstiger View Post
If VIN is below A776831 see attached bulletin ignition switch may be faulty.
There have been other posters with the same issue. I think this is definitely the cause of your problem. I remember an MB tech on here stating this as the cause in another thread, but cannot find it now. Share this with your SA
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Old 01-31-2019, 11:35 PM
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Iím having the same problem with the car going into park. Should I just call the dealer and have them order the EIS and schedule a time to get it put in?

does the part have to come all the way from Germany?
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Old 02-02-2019, 06:06 AM
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Yesterday I had it plugged into a mobile diagnostic machine and the man at the workshop drove it and it happened whilst he was driving so he drove back to the garage and we had a fault saying that there is a problem with the radar control unit not communicating.
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Old 02-02-2019, 10:25 AM
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Originally Posted by Bluei View Post
Yesterday I had it plugged into a mobile diagnostic machine and the man at the workshop drove it and it happened whilst he was driving so he drove back to the garage and we had a fault saying that there is a problem with the radar control unit not communicating.
did they give you a price? Do you have distronic? Or parktronic?
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Old 02-02-2019, 11:07 AM
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To be honest I wouldn't know if it was parktronic or the other lol... It is a 2013 E220 blue efficiency.
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Old 02-02-2019, 11:19 AM
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Parktronic and Distronic have nothing to do with this. The lack of communication is the key sensor.
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Old 02-02-2019, 07:15 PM
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I was just figuring out if my car had such a sensor and if so will it be more expensive for the radar sensor or the EIS

i worry too much
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Old 02-02-2019, 07:22 PM
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The dealer did give me a really nice brand new GLC 300 loaner to drive though
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Old 02-03-2019, 01:39 AM
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This is a common issue with W212 chassis cars....... Ignition switch needs replacement.
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Old 02-03-2019, 03:48 AM
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Can I reprogram this switcs or would I have to buy a new one.
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Old 02-03-2019, 10:22 AM
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Somewhat off topic but related...is it possible to program the car to NOT go into park mode when opening door with a STAR DAS system? I like to sometimes stick my head out when parking in reverse and have a tendency to forget that the car will go into park mode when door is opened at low speed. I'm sure the transmission doesn't like it either.
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Old 02-03-2019, 08:27 PM
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Any guesses as to the approximate cost for the dealer to replace the EIS? Also I just bought the car week before last so I have the bill of sale but not state registration or title yet (takes 3-4 weeks). Is this gonna be a problem???
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Old 02-04-2019, 11:05 AM
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If vehicle is within VIN range request MBUSA goodwill replacement arguing EIS installed @ production is defective per bulletin.
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Old 02-04-2019, 11:27 AM
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Originally Posted by konigstiger View Post
If vehicle is within VIN range request MBUSA goodwill replacement arguing EIS installed @ production is defective per bulletin.
thanks man! I appreciate it!
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Old 02-06-2019, 12:09 AM
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There is no reprogramming this EIS. It's a built in safefty so that when you remove the key from the switch, it will automatically put the transmission into park.
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