Key fob not locking/unlocking car

arifsaleem89

New Registration
Joined
Jan 16, 2021
Messages
1
Reaction score
0
Your Mercedes
CLC 220 2008
Hi,

First time posting.

As mentioned above, neither of my key fobs are working (they were fine a couple of days ago). I have 2.

I have tried replacing the batteries in one of the keys. Still no luck.

The IR seems to be working (I can see a light through my camera and whilst temperamental the lock/unlock mechanism does work if my key is right against the keyhole). Still won't work from a distance though.

I have checked the fuses and they all seem fine. However someone did mention elsewhere online that the fuse for the antenna and the aam should be checked however I can't see these listed - any idea? In any case I have checked all the fuses and none appear to have blown.

I have also tried resetting the keys but nothing!

Any other ideas?

Thanks in advance!

Arif
 

ajlsl600

Senior Member
Joined
Nov 18, 2013
Messages
8,815
Reaction score
5,784
Location
france
Your Mercedes
clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Watchin this one of my keys same changed batts led flashes nothin happens other key works fine ?
 

Blobcat

Moderator
Joined
Feb 8, 2006
Messages
38,063
Reaction score
26,211
Location
Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Watchin this one of my keys same changed batts led flashes nothin happens other key works fine ?
Have you dropped it?
There is a small coil on the RF side that can easily become detached from the circuit board after a drop.
They can be soldered back in if you’ve a small enough iron (and a magnifying light)
 

ajlsl600

Senior Member
Joined
Nov 18, 2013
Messages
8,815
Reaction score
5,784
Location
france
Your Mercedes
clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Cheers not droped as far as I know. Will look into it.bit wary as still starts car.
 

Blobcat

Moderator
Joined
Feb 8, 2006
Messages
38,063
Reaction score
26,211
Location
Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Cheers not droped as far as I know. Will look into it.bit wary as still starts car.
Starting the car is the immobiliser chip which doesn’t require power - that’s read by the inductive loop in the binnacle around the ignition switch.
As long as you don’t lose the chip when you take it apart you should’ve have an issue...
 

ajlsl600

Senior Member
Joined
Nov 18, 2013
Messages
8,815
Reaction score
5,784
Location
france
Your Mercedes
clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Cheers again .little project ,much more fun than watchin fuel level on heating tank ,n following lovely around doin what no woman seems able t do turn anything off.!!
 

Blobcat

Moderator
Joined
Feb 8, 2006
Messages
38,063
Reaction score
26,211
Location
Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Cheers again .little project ,much more fun than watchin fuel level on heating tank ,n following lovely around doin what no woman seems able t do turn anything off.!!
Get some sensor lights... never need to switch them off they turn themselves off with no movement :cool:
 

ajlsl600

Senior Member
Joined
Nov 18, 2013
Messages
8,815
Reaction score
5,784
Location
france
Your Mercedes
clk3202001,sl6002003 with everything regrettably sold ,A class 170cdi auto. NG/TF1800 ML250
Got them in garage n stores .put one in d stairs bog really irritates lovely that does !!
Two weeks ago I changed all spots to newer more economic versions..announced they fact that they run at less than half previous.now find lights on all time as so cheap to run can be on all day for her plants!! Think thats got to be a I have a f thing !!!!!!! Cos I never saw that commin..
 

Srdl

Senior Member
Joined
Oct 8, 2015
Messages
6,696
Reaction score
5,397
Location
Hampshire
Your Mercedes
GLC43 AMG 2018 (X253)
Hi,

First time posting.

As mentioned above, neither of my key fobs are working (they were fine a couple of days ago). I have 2.

I have tried replacing the batteries in one of the keys. Still no luck.

The IR seems to be working (I can see a light through my camera and whilst temperamental the lock/unlock mechanism does work if my key is right against the keyhole). Still won't work from a distance though.

I have checked the fuses and they all seem fine. However someone did mention elsewhere online that the fuse for the antenna and the aam should be checked however I can't see these listed - any idea? In any case I have checked all the fuses and none appear to have blown.

I have also tried resetting the keys but nothing!

Any other ideas?

Thanks in advance!

Arif
You’ve already gone beyond my technical ability Arif. Checking the second key and the IR signal on the phone is as far as I would get!

Perhaps some of our more helpful experts can help? @alexanderfoti @star @Uncle Benz
 

star

Forum Supporter
Authorised Forum Supporter
Joined
Oct 6, 2004
Messages
6,151
Reaction score
1,768
Location
Reading
Your Mercedes
Smart + others :)
The aerial amp can fall off the rear screen.
 

AIB understand your special Mercedes deserves a special insurance policy. We have a refreshing attitude to insuring high performance, modified, imported or classic and vintage cars and deal with the UK’s leading insurers. We offer discounts for length of ownership, where the vehicle is kept overnight and limiting the mileage and can also cater for those clients who need higher mileage and business use. To obtain a quotation please call the team on 02380 268351 or visit us atAIB Insurance
Top Bottom