Windscreen wipers problem on 2011 Jaguar XF Portfolio 3.0D S

[Limbo]

Hi All, My windscreen wipers suddenly stopped working whilst driving home. Pulled into the next services and awaited assistance. After a long wait, help arrived but to no avail. Managed to drive home in dry conditions. Booked car in with local Jag specialist. Car checked out and wiper motor proved to be operational after gaining access and isolating to test. On reassembly wipers still not operational via stalk switch. Specialist suspected water ingress problem in Control Junction Box in drivers footwell but didn't have gear or time to sort out problem and suggested I contact another specialist to fully diagnose problem, change CJB if necessary, and re-programme if necessary. Contacted recommended specialist but booked up over Christmas period. I checked out the various Jag forums and found details of the 'common' water ingress problem with the drivers footwell CJB caused by leaky washer pump 'wicking' internal water ingress via cabling. On pulling the typical connector involved and examining the connector and footwell CJB board socket there was no 'typical' evidence of staining or damage caused by the proposed water ingress problem. I reconnected the connector, turned on the ignition and tried operating the wipers again to no avail. However a warning light came up indicating a parking brake issue which was not there before. 

Can anyone please provide any useful advice on this please as I do not see the point of putting the car into another specialist when it seems that the 'typical' water ingress fault does not appear to apply. Any potential pointers to other causes would be very helpful (have checked wiper fuse but not relays etc.). Thanks in advance. 

Ted 

[LairdScooby]

Has anybody thought to check the fuse? We've had a lot of cold weather lately and it's all too easy for the wiper blades to freeze to the screen without anybody realising and hit the wipers to shift the "condensation". Result - overload the wiper motor and pop the fuse. 

[Limbo]

Hi Dave, 

Ted Here, Fuse was checked by Breakdown assistance and later by me and original specialist. Weather wasn't cold when driving and wipers first stopped. Only checked 30A green fuse in engine bay unit.  Thanks for your response, comments on any more possibilities would be welcomed please.

Cheers for now, Ted

[Big John]

Hi Ted

The fact you "generated" a new fault by disconnecting and reconnecting the connector suggests corrosion on terminals which may well be due to water ingress. Have you tried disconnecting, examining and cleaning the terminals and then re-connecting?

John