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XF Sportbrake KVM or key sensor issues


John MK
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Good Morning everyone, I'm after some help before having to sell an arm or a leg to pay for an upcoming repair!

My keys have stopped working! None of the buttons on either key are recognized by the car and the key "isn't found" when starting. Accordingly, I am having to lock/unlock with the emergency key (sets the alarm off of course) and start the engine using the sensor pad under the dash.

It is NOT either the main battery which has not been disconnected and is fully charged (according to the AA) nor the fob batteries which have just been replaced.

The problem started with non-recognition on starting, then went to failure to lock, then failure to unlock! Everything else works just fine.

I've been quoted £190 for the module plus £200 plus for labour so before I get it done, does anyone have any ideas?

Many thanks.

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Hi.....welcome to the club

I would be tempted to disconnect the battery, leave for a short while and then reconnect (negative off first and on last).

The try to plip the locks with the key fob and see if it reads the keys after a few attempts.

Here's some info on battery reset but for S-Type but some functions may not work but may also be helpful to see procedures

 

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Update.

Thanks very much for the advice. In the event, the problem cured itself after 2 days. The only thing of note was that on the morning of failure it was exceptionally cold and very foggy. Despite there being no visible or traceable damp anywhere inside the car and under the bonnet would have been hot after a 60 mile round trip, I can only think that moisture had disrupted the circuitry and it took 2 days to dry out.

So far so good, even after prolonged heavy rain but I'll have to wait for the next freezing and foggy day to see what happens.

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