Smart keyfob issues - BCM vs KVM replacement
#1
Smart keyfob issues - BCM vs KVM replacement
Hey,
For the past few months I have been having issues with both my smart key fobs - comfort access/entry works fine, however the lock/unlock buttons are very temperamental and often do not work unless I am very close to the car and press the button 5+ times. Periodically when I get in the car I get the 'smart key not recognized' error message, however lately this has been less of an issue since software update (see below).
I have had two garages look at the issue, both proposing different solutions so was hoping I could get some advice / experiences. Summary is as follows:
Anyone have some advice or experience on the above?
Thanks
For the past few months I have been having issues with both my smart key fobs - comfort access/entry works fine, however the lock/unlock buttons are very temperamental and often do not work unless I am very close to the car and press the button 5+ times. Periodically when I get in the car I get the 'smart key not recognized' error message, however lately this has been less of an issue since software update (see below).
I have had two garages look at the issue, both proposing different solutions so was hoping I could get some advice / experiences. Summary is as follows:
- My car is a 2015 F-Type R
- The batteries in the fobs have been replaced multiple times and not solved the issue.
- Garage A have said the following: Checked the keys and stated the fobs themselves are ok. They refreshed the key module software / did some reprogramming - the key worked for 1-2 days then went back to not working properly. They state the BCM needs replacing - new key fobs are not required. They state it's not the KVM because in their experience if the KVM is faulty the keys are not recognized at all.
- Garage B have done / said the following: Smart key fob found operational and recognized, key health check passed, simulated smart key fob detection and confirmed both keys working intermittently. They recommend replacing the KVM and both keys (need new keys are required with new KVM). They stated that it's not the BCM because it controls and detects faults, so if the KVM is faulty it will register to the BCM.
Anyone have some advice or experience on the above?
Thanks
Last edited by alexw87; 05-12-2024 at 12:40 AM.
#4
Hi, can you elaborate a little bit about configuring the RF? I'm experiencing an issue where my KVM doesn't "see" my keys.
I have tried updated the KVM succesfully no still can't see the keys and configure the KVM as new and everything goes well up to the point to program the keys.
Appreciate any light you can shed on this situation.
Thank you
#5
How sure are you that the key fob batteries are good? I had a similar issue on my XF. Turned out the batch of so-called top-brand batteries I bought on Amazon were low quality and didn't run a good voltage level. So the fobs worked intermittently. When I bought a more expensive single-pack keyfob battery it worked perfectly...
Other suggestion is that sometimes the battery contact inside the keyfob doesn't touch properly on the battery (dirty or a little bent) and that also can cause intermittent issues
I'd be skeptical of replacing KVM and keys for an intermittent issue as if it works some of the time then it doesn't seem to be a programming issue
Other suggestion is that sometimes the battery contact inside the keyfob doesn't touch properly on the battery (dirty or a little bent) and that also can cause intermittent issues
I'd be skeptical of replacing KVM and keys for an intermittent issue as if it works some of the time then it doesn't seem to be a programming issue
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#6
I had a similar issue years ago and now always measure batteries before I fit them!
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