KEYLESS GO NOT FUNCTION

Asked by Mar 25, 2016 at 05:53 AM about the 2012 Mercedes-Benz M-Class ML 350 BlueTEC

Question type: Maintenance & Repair

Hi, I have a Mercedes Benz W166 ML350 BLUETEC 2012 year, the keyless go suddenly are not function at all, cant push button start, cant lock / unlock door by handle. I had scan with Xentry DIAGNOSTIC,but it cannot be read the data out from the keyless go control unit N69/5, it just show me the red word ' The control unit does not respond to the query from Xentry Diagnostics.' and below the red word ' Possible cause and remedies -The power supply of the control unit is not ok -The control unit is not standard equipment and for this reason it may not be installed. '

I also had check the fuse infront beside the engine and rear under the seat, that all are no problem.

Can you please help me how to fix it?

4 Answers

405

Sound like u have an aftermarket key fob I would love to see a pic of it if u have an aftermarket key fob the control unit and fuse are usually under steering wheel or the knee kick panel I only say aftermarket because to my knowledge that year mb didn't have remote start ....

78,965

How about the battery in the remote?

I have exactly the same problem. I want to replace the control module but do not know where it is located?? Under the rear seat or in the trunk under the spare??

Just happened to my car, 2012 ML350. It's the keyless go module. My mechanic getting part from Mercedes part and labor $830 :/

Your Answer

M-Class

Looking for a Used M-Class in your area?

CarGurus has 6,464 nationwide M-Class listings starting at $2,950.

ZIP:

Mercedes-Benz M-Class Experts

  • #1
    jihadghazali
    Reputation
    1,230
  • #2
    wellness
    Reputation
    1,000
  • #3
    snowseal19
    Reputation
    760
View All

Related Models For Sale

Used Mercedes-Benz GL-Class
172 Great Deals out of 4,038 listings starting at $5,900
Used BMW X5
386 Great Deals out of 16,742 listings starting at $2,800
Used Mercedes-Benz E-Class
534 Great Deals out of 21,858 listings starting at $1,999
Used Mercedes-Benz C-Class
773 Great Deals out of 26,308 listings starting at $1,595
Used Mercedes-Benz GLK-Class
209 Great Deals out of 3,502 listings starting at $9,279
Used Mercedes-Benz S-Class
116 Great Deals out of 7,535 listings starting at $1,200
Used Mercedes-Benz G-Class
7 Great Deals out of 1,116 listings starting at $26,482
Used Porsche Cayenne
152 Great Deals out of 6,429 listings starting at $4,495
Used Lexus RX 350
588 Great Deals out of 17,432 listings starting at $5,900
Used Land Rover Range Rover Sport
127 Great Deals out of 4,400 listings starting at $5,995
Used Audi Q7
151 Great Deals out of 6,235 listings starting at $5,988
Used Land Rover Range Rover
71 Great Deals out of 3,658 listings starting at $2,850
Used Jeep Grand Cherokee
900 Great Deals out of 71,642 listings starting at $950

Used Cars For Sale

2012 Mercedes-Benz M-Class ML 350 BlueTEC For Sale
10 Great Deals out of 91 listings starting at $16,100
2011 Mercedes-Benz M-Class ML 350 BlueTEC For Sale
4 Great Deals out of 54 listings starting at $10,899

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.