Jaguar XF central locking

[Alastair Paterson]

Hello all,

 I have owned a 2013 Jaguar XF for the past 11 years. Recently, at a non Jaguar garage, the alternator was changed, requiring  batteries disconnect. I suspect that a battery saver was not used. Consequently the, dreaded, central locking failure and inability to set alarm was an immediate problem.  I have subsequently replaced the batteries with, a scanner, battery reset done by the same garage. They, however, are unable to repair the central locking problem and don’t seem to be particularly interested.

An electronics specialist believes that the rear body control module was “blown” when the batteries were disconnected at time of the alternator replacement. I have ordered one on eBay, just in case.

Does anyone know of any other solutions, should replacement of the BCM prove unhelpful. Regards Alastair Paterson.

 

[Big John]

Hi Alistair

I Feel your pain having suffered permenantly locked rear doors / non-operational rear windows when I let the battery of my 2013 Sportbrake go flat in the first Covid Lockdown.

Mine was fixed under warranty from a Non-Jaguar main dealer, (after the AA managed to get in and jump start it) who did have access to Jag main dealers in the same group. They apparently talked them through the process of re-coding the module using their generic "Autologic" diagnostic software. If you search on here there have been a number of threads about garages who can sort this in 15 minutes for around £100. I think one was a company called MDM at Coalville Leicestershire

Obviously the East Midlands is a long drive from Cornwall but might be worth it. I think my first port of call would be to ring around and try and find a more local jag independent (there is one in Honiton, Devon) and see if they can sort it. Pretty sure the BCM replacement would need coding to the car in any case.

Good Luck and please let us know how you get on as it helps others in the future.

John

[Alastair Paterson]

Cheers John,

Thank you for your rapid response. I’ll know my next port of call if the BCM module does not work. 

Alastair.

[Big John]

Hi Alistair

My understanding is that a replacement module will need coding to work. I would do a ring around and see if you can get the problem solved without a hardware change. Most likely problem IMHO is the software in the relevant computer module was corrupted by a transient low / high voltage event in the battery change (unlucky but it can happen). The simplest fix is to restore the software which is almost certainly possible with the correct diagnostics software and knowledge.

Good luck 🙂

John

[Alastair Paterson]

Hi John,

I’ll let you know how I get on.

Thanks again for your interest.

Alastair.