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?

3 Answers

355

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 ....

71,415

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??

Your Answer

Add photo

Related Questions

  • KEYLESS GO NOT FUNCTION 3 answers

    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,b...

    2012 Mercedes-Benz M-Class ML 350 BlueTEC

    -

    Maintenance & Repair

  • Cannot Lock/Unlock Mercedes Benz ML 350 using keyless remote 2 answers

    I have a 2007 MB ML350 and I can't unlock any of the doors using the keyless remote; this used to work quite normally until it stopped one morning. I tried using the spare key and it wouldn't open i...

    2007 Mercedes-Benz M-Class ML 350

    -

    Maintenance & Repair

  • I replaced the brake light switch but my ml430 will go to drive but it wont change out why is that? 1 answer

    I had turned off my ml430 and when I cranked it back up it would not shift to drive. I replaced the brake light switch and now it will go to drive but will not show what gear it is in and when I put i...

    Mercedes-Benz M-Class

    -

    Maintenance & Repair

  • My car can't go into 3rd gear 2 answers

    I have a 1999 mercedes ml 320. The drive shaft bearing was broken, and i took it the mechanics, they changed the drive shaft bearing and the tire rod and also aliment. Now the car can't...

    1999 Mercedes-Benz M-Class ML 320

    -

    Maintenance & Repair

  • How to repair both brakelight not working 1 answer

    Both rear brake light not working. I can't find the fuse box

    Mercedes-Benz M-Class

    -

    Maintenance & Repair

M-Class

Looking for a Used M-Class in your area?

CarGurus has 5,236 nationwide M-Class listings starting at $2,800.

ZIP:

Search Mercedes-Benz M-Class Questions

Mercedes-Benz M-Class Experts

#1 jihadghazali
jihadghazali
Reputation 1,170
#2 wellness
wellness
Reputation 910
#3 snowseal19
snowseal19
Reputation 610
View All

Related Models For Sale

Used Mercedes-Benz GL-Class
137 Great Deals out of 3,764 listings starting at $7,900
Used BMW X5
451 Great Deals out of 15,733 listings starting at $2,800
Used Mercedes-Benz E-Class
360 Great Deals out of 19,350 listings starting at $1,500
Used Mercedes-Benz C-Class
429 Great Deals out of 25,479 listings starting at $2,000
Used Mercedes-Benz GLK-Class
93 Great Deals out of 3,066 listings starting at $7,500
Used Mercedes-Benz S-Class
140 Great Deals out of 6,601 listings starting at $2,990
Used Lexus RX 350
304 Great Deals out of 20,347 listings starting at $4,750
Used Mercedes-Benz G-Class
18 Great Deals out of 1,335 listings starting at $19,995
Used Porsche Cayenne
104 Great Deals out of 5,225 listings starting at $3,999
Used Audi Q7
82 Great Deals out of 4,402 listings starting at $6,850
Used Audi Q5
119 Great Deals out of 6,829 listings starting at $8,995
Used Land Rover Range Rover Sport
170 Great Deals out of 6,331 listings starting at $7,950
Used Acura MDX
270 Great Deals out of 18,600 listings starting at $1,495
Used Jeep Grand Cherokee
1,027 Great Deals out of 72,252 listings starting at $700

Used Cars For Sale

2014 Mercedes-Benz M-Class ML 350 BlueTEC For Sale
100 listings starting at $22,495
2012 Mercedes-Benz M-Class ML 350 BlueTEC For Sale
3 Great Deals out of 68 listings starting at $19,995
2011 Mercedes-Benz M-Class ML 350 BlueTEC For Sale
4 Great Deals out of 37 listings starting at $13,992

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.