Trying to replace the driver's side, outboard sensor. I can get my hand on it but cannot tell how to remove. Held by what means? Twist, pull? If I knew how to remove it, would save the effort of removing bumper?

 

Theres 2 tangs that hold the sensor in place. You pull the tangs apart and push the sensor out. Not hard to remove the bumper though.

 

hmm.... depends on RUST

 

If this is a rear parking sensor you will need to take the bumper cover off to change it.

I did one of my ones a couple of years ago. You may well find the bumper fixing screws are rusted solid. I just made sure I had some stainless steel replacements for the screws and the captive nuts before I started and just snapped the old ones. You will need to stop the backs from turning using small mole grips or you will destroy the plastic. It can be a bit of a job getting the grips in to some but it can be done for most. Even if you can not the bumper plastic is quite flexible and provided it is not too badly damaged it can be re-used.
But you may be lucky and be able to get them undone.
When you put the fixing screws back in grease them so they will come undone next time.

 

If it is any help the details on how to change the rear sensors are in the Jaguar Workshop repair manual on:
Page 2741 for cars made up to 02/2004
Page 2747 for cars made from 02/2004.
The bumper cover removal is on page 3210.
Here is a link to the Workshop manual. It is a big file so it may be best to download it to your PC.
http://www.jagrepair.com/images/Auto...M-Workshop.pdf

 

Do not touch the sensors if they're all ticking. It means they work and the wiring harness also is ok. So is the module. Check the beeper.

If no audible signal is heard on first reverse after ignition, check sensors and fuses and the beeper, then: Pry open module housing with flat metal from connector side. Check the circuit and if any white water residue, buy a new module.

There's a long beep when automatic box goes on reverse after ignition if aid system has fault on sensors/ harness. Module takes the on/off signal from reverse light with manual box, so tail light bulbs may cause fault. Only with manual gearbox.

Locate pin pair W + N on modules multi-pin connector. Introduce battery voltage or test instrument. If beeper is dead: You'll find the beeper located in the center of parcel shelf. Remove the two beeper fastening from underneath. You should be able to move the beeper over to the opening on shelfs metal body. Undo the electric coupling. Test the beeper with battery to exclude wiring problem.



Only if there's dead sensor
If sensor is dead:
-Remove trunk liner enough to remove tail light: Remove electric coupling and ease in three plastic holders, they break off easily. Remove tail light whole.
Both outer and inner sensor are accessible from opening on bumper under the tail light.
-Push sensor in with your thumb and open mounting brackets jaws with other hand. Wiggle the sensor. Remove the sensor from harness. Test with working sensor to exclude wiring problem. Re-connecting takes a lot of force, use light hole edge to squeeze the connectors together. Or a good tool.

 

Appreciate that. Will try it when I have a chance. Daughter using it as daily driver and no time to work on it.