Hi all,

I have a 1997 xjr 4.0 and has been stood for about three months, went to get it out and the park wont release when i press the brake pedal

is there a manual way to release the park, could somone give me an idea what may be wrong

cheers in advance

Dave

 

Check your brake lights, will not release if bulbs are out. Could also be the switch in gear selector, give it a good "wiggle".

If all else fails, remove the plastic star shaped cap to the left of the j gate, and stick a screwdriver in the hole to release.

 

dfieldsend
cheers for the reply

no brake lights, and normal rear lights work
completely new to these motors so any help would be appreciated,

Iv'e been looking for a manual could anyone give me advice which one to get I find the CD manuals hard to use

Dave

 

eBay usually has various used manuals for sale...

.

 

here we go, Iv'e checked all the fuses, swapped the brown square blocks round in the boot, checked the connector on the brake pedal all appears ok, with the connector fixed in the switch, if i earth the blue wire on the connector when i press the brake it clicks and I can move the gear stick out of park, is it possible the switch is faulty

cheers

Dave

 

found this post https://www.jaguarforums.com/forum/x...ck-park-85682/

There is an electric interlock that prevents you from shifting out of park without pressing the brake. This is a safety feature that most modern automatics have.

If your VDP is like my Stype, then there is a Gearshift Interlock solenoid and not-in-park switch at the J-gate assembly.

Also at the J-gate assembly is a module that receives a CAN data stream.

With the engine running and your foot on the brake, the CAN data stream tells the J-gate assembly that the brake is on and what gear the transmission is in.
When you gently and slightly pull the shifter toward R, the not-in-park switch is closed and sends a signal to the instrument cluster. Eventually, the CAN data stream carries a message to release the gearshift interlock solenoid.

So, where can problems occur?
1. CAN data stream is not getting to the J-gate assembly. If the P for park is illuminated, the data stream is being received and power and GND are present.
2. The switch at the brake pedal is not working. There are two switches, one works the brake lights the other cancels cruise control. Are your brake lights illuminating? You might have to get under the dash with a multimeter to check these.
3. The wiring from the brake switche to wherever is bad. The wire is GreenOrange.
4. The not-in-park switch is bad. Because you have disassembled the center console and have access to the J-gate assembly, you should be able to access and test the not-in-park switch. J-gate assembly connector: Pin 1 - 12VDC (greenorange) Pin 2 - GND (black) Pin 4 - Not-in-park switch output, GND when closed (yellow)
5. The wiring from the not-in-park switch is bad. See 4. It looks like you could safely short pin 2 and pin 4 of J-gate assembly connector (backprobe) as doing so would just bypass the not-in-park switch.
6. The gearshift interlock solenoid is bad. Similar to 4., you should have access to the solenoid. Check voltage across solenoid and resistance through solenoid.
7. The gear position switch inside the transmission is bad.

If it were me, I would start with 1. and progress through.

However, what Fraser is suggesting is a temporary work around.

NOTE: I just discovered something. With the key out of the ignition, moving the shifter to the left closes the not-in-park switch and a beeping is heard from the instrument cluster. This could be a substitute for steps 4. and 5.


It seems i have problem No 1 my P is lit up

could someone what the CAN data stream is and how i can remedy this problem

mine also bleeps when shift is moved to the left

cheers

Dave

 

Anyone know what size the star shaped cap is that you unscrew to manually shift out of park? I am guessing it is a large Torx?

 

The hand brake mechanism could be physically jammed due to rust, corrosion, etc. Mine has manual transmission, and the brakes were stuck once after car stood still for a couple of months in the open. Symptom was brake lights were on with the foot off the brake pedal.