I have another issue with my handbrake of my 2007 2.7 TDV6 Diesel. Well it might be the same issue, just got worse or missed. I had an problem with the parking brake failing- either sticking on or not applying and the dash asking to reset it. So I change the battery and put in a module (the correct module confirmed by Jaguar). All has been good until the issue with the unable to apply parking brake message appearing. But this time when you pull the switch nothing happens and you get the message "unable to apply park brake".

I have checked all earth points- they look good and I replaced the one from the gear box to the bracket that mounts the Cat, the points in the boot were only finger tight and the 2 behind the head lamps were checked a while ago and seem fine. I checked these as just before this happened I noticed the stereo was requesting the security code and I had the message apply park foot brake and parking brake.

I plugged in a code reader and it said Park Brake Switch so I have replaced the switch and it is still the same.

I dont have SDD and Jaguar want £170 plus 20%VAT to plug it in and diagnose it, there is independent specialist down near Newquay but he charges £99 plus 20% VAT, so before I fork out all this money on diagnostics does anyone on here have any suggestions?

As it can not apply the park brake it wont let me take it out of park so I cant use the car; I can manually release from park but it constantly beeps at you until you put it back. I would be grateful for any suggestions please.

 

I've never been unable to move out of Park when I had the unable to set parkbrake message. Different car but same systems... 2007 XJ8 with 4.2l V8. The "apply foot brake and set park brake" is an initial calibration, not an error. It needs that if you've removed power from the system, like disconnecting the battery.

I will add that the battery must remain well charged. If my car sat for a week or so, I would get messages like unable to apply parkbrake and cruise not available. Cruise would come back after driving around enough to restore charge, but the only fix for the park brak was to to the battery cable reset: remove the negative cable, remove the positive terminal, touch them together momentarily, then reinstall the positive, then the negative terminals.

But like I said, I don't see why any parkbrake issue would make the car refuse to come out of Park. Something else is causing that, I'm sure.

 

When it first started I could still drive, I replaced the battery and park brake module and it worked find for about 3 months.

The battery is 3 months old, I have disconnected it and touched the 2 terminals together, I left it disconnected whilst I did the earth points but put a fully charged high quality booster pack on whilst it was disconnected. I reconnected the batter and the booster pack and started the car and still the same issue.

The only fault related to the park brake switch which as I said I have changed.

Do you think the modules need calibrating to the car?

Can this only be done on SDD? or will something like Icarsoft of Launch tablet do the job?

My diagnostics is broken and about to buy a new one and sadly didnt understand how to use the SDD software

 

Disconnect the cables and live without it. Just ease off brake when parking so car does not roll hard on parking pin.

 

I would do this but the car will not come out of park because of the fault, I can manually release the gear lever from park but I get the constant beeping noise

 

I can understand the not wanting to disconnect the cables; it might be a good clue that your code reader thinks its the Parking Brake Switch. If you have access to a multi-meter, I would verify that the Parking Switch continuity to the Parking Brake Module is correct. The schematic below should be similar to yours.

But before you do that, I would try one more time...
Without any charger or power supply hooked up, disconnect the positive then negative battery cables from the battery terminals, then hold them together (or otherwise short them) for 30 seconds, then hook up battery and see if that forces a "Parking Brake Calibration" when you turn ignition on first time.

 

Mmmmm..mine is 2008 and never had that problem ... Hope you figure it out.

 

I understood you to say that you CANNOT get the car out of Park. Here you say you can but the car beeps at you? When you said the car wouldn't come out of Park, did you mean it was physically locked, or that it comes out OK but beeps at you? That's two different situations.

The beep is indicative of the parkbrake not being calibrated, i.e. you did not see, or did not obey, the message "Apply footbrake and parkbrake" when first starting the car after the cable-remove-touch-together reset.

 

No it is locked in park, I have to use the bypass switch at the side of the gear lever to get it out of park. The beeping is the same one you get if you turn off the engine whilst the lever is out of the park position. I have a amber warning light on the dash and the message "Cannot Apply Park Brake" then it flashes to "Press Foot Brake and Apply Park Brake" It flashes between the 2.

I have tried the re-calibration, pumping the foot brake, pulling the park brake switch 5 times and disconnecting the battery and touching the terminals together. I am going to jack the car up tomorrow and look at the actually mechanism, I am thinking it cant apply it as it is jammed.

Found this document last night so will take a look and see what I can find from that (See attachment PDF below)