Oh dear! I have recently acquired a 95k 2001 S type 3.0 which is my 6th Jaguar over a long and inglorious series of cars, and it is gorgeous! However, it sure is good at throwing curve *****! The first was a new key supplied and coded by an automotive locksmith for £210 (when the local main ******* wanted £545) the remote of which proved unreliable from day 2! Reverted to the separate remote and key which has always worked perfectly other than arbitrarily deciding when it will open and close windows and sunroof! Days go by and then for no reason, I can’t get out of the car just using the driver’s door handle as it resolutely remains locked so the remote has to be used to unlock! Just thrilled that the car isn’t on fire! Additionally, suddenly, for no apparent reason, instead of pushing the lock button once to lock all 4 doors, it requires two inputs to do this. The boot remote unlocking has behaved impeccably throughout. It’s my friend! Almost finally, and then you can stop laughing, the memory seats occasionally do their own thing too and have to be set up again. Sigh.I would appreciate any ideas for a fix.I’m thinking these issues might be related?

The rear parking sensors remain mute, the DSC light flashes constantly, so of course the cruise control is inoperative. I have been advised that since the car has recently had new rear wishbones and bushings, the DSC could be indicative of a need for rear suspension alignment? Again and advice would be hugely appreciated!

 

First thing to do, if you have not done so already is; make sure your battery is good and fully charged. My 01 Stype used to have weird symptoms but after the battery was charged, they all disappeared. May not fix your remote but a fully charged good battery is a base that you should start from.

 

@CaptGrumpy, use a voltmeter to read the available voltage across the battery terminals with the ignition in the OFF position. There should be a minimum of 12.6 volts available for all modules to function correctly.

If the voltmeter reveals less than 12.6 volts, charge the battery for five hours at 2 to 5 amps and retest. If the voltage is still below 12.6 volts, the battery is suspect and should be replaced prior to attempting any further diagnosis.

Has the vehicle recently passed MoT? If so, where there any advisories?

 

The car has a brand new battery, which I have charged with a whizzy computerised charger for 24 hrs. I will check the actual voltage though, so many thanks for that. The car passed its MOT in December (before I bought it) with no advisories. Frankly I think the 'new remote and key' combo is not the right one, and/or the genius that cut and coded it wasn’t as good as he thought! Having said that, he said his kit wasn’t detecting anything via the OBD2 port, so found and alternative way of doing it. Mmmm! One other thing, the DSC light has been flashing since I received the car, but note it had a rear suspension overhaul very recently. I can see new wishbones and bushes (I’m 77 so once underneath, start worrying how I’m going to get up again!!!) but don’t have a comprehensive record of what was actually done, but wondering if this could cause the DSC warning. Perhaps I should get a full tracking carried out? I’d love to have the light extinguished!! Can’t use the cruise until it is I believe. Many thanks for your message!

 

Many thanks! It’s a brand new battery and fully charged, but I will confirm the actual voltage. Appreciate your reply!

 

Just checked battery voltage, indicating 12.2v on 2 devices, so I guess the battery is you-know-what!

 

I will mention that if you own an S-type, you need a diagnostic code reader that is capable of reading proprietary Jaguar chassis codes. This is a "must have" item.

In terms of the key, you may well be on to something. It proves not to be a voltage issue (which is pretty much always a starting point in diagnostics on an S-type) then the wheel sensor may have been damaged during the recent rear suspension work; they are not expensive and are relatively easy to replace.

On the issue of the parking assist system, to you get a continuous 4-5 second tone when engaging reverse on the console shifter? This is indicative of one (or more) duff sensors. My iCarsoft LR-II was able to pinpoint the exact sensor that was the problem.

Good luck getting your Jaguar sorted!

 

Many thanks for your guidance, so very much appreciated as it’s good to go load, aim, fire rather than load, fire, aim! Sounds like I really do need the iCarsoft LR v2 diagnostic kit! I’ll post how I get on, but it’ll probably be a while as getting ready to move - after I’ve sorted and thinned 45 years of "stuff"!

 

Welcome to the forum.

After unlocking the car using the remote, holding down the unlock button will open the windows and sunroof. Could be the unlock button is sticking and activating this function. This might be from the rubber cover getting stuck, or the switch itself may be jammed.

This thread has details about replacing a bad switch:

https://www.jaguarforums.com/forum/s...itches-259194/


For an intermittent remote, another possibility is bad solder joints on the circuit board:

https://www.jaguarforums.com/forum/s...tently-258769/


Check the inhibit switch on the overhead console. You will see three switches towards the aft edge. The reverse parking aid switch is labeled R OFF. If activated, the little red light in the switch will be illuminated. The light is hard to see in the daylight, or it could be burned out.

If the light is illuminated and won't turn off regardless of the switch position, a sensor may have failed. With a bad sensor, you'll get a solid tone for about 3 seconds when you first shift in reverse, and then nothing after that. Details here about to identify and replace a bad sensor:

https://www.jaguarforums.com/forum/s...cement-269327/


If the little red light turns on and off with the switch, it's possible the speaker has failed. Details here:

https://www.jaguarforums.com/forum/s...volume-264709/



Components out of alignment shouldn't cause a DSC fault. Could be a wheel speed sensor got knocked loose during the recent work, or wasn't reconnected properly. At each wheel, give the harness a good visual inspection and make sure the sensor is properly seated in the hub.

 

Charge the battery overnight and see if that helps. At the time of sale, battery is typically not fully charged and you can't count on the alternator to have done the job.

After charging the battery, do a quick check of the car's charging system. After engine start, you should see about 13.7 volts at the battery. If low, that could easily be part of the equation for all the weird stuff going on.

Look in the spare tire well for signs of water. These cars are notorious for rain leaking into the trunk, which wreaks havoc with the electronics back there.

 

Mine is a LR-II (Roman number 2) and as such is a much older version. The V2 is intended for the newer S-types X204 and 206 and may not be compatible with your X200. There have been several reports of this issue on various Jaguar fora.

A used i930 may well be your best and most economical bet in the iCarsoft line.

 

One thought on this situation. Remove the battery from both remotes for a few days and see if the problem returns.

My hunch is a remote may be intermittently stuck in the lock position, continually sending the command. I think the car knows to ignore any commands from the remote while the ignition is on. But I'm not sure it's smart enough to realize you haven't opened a door yet to get out. The car may be responding as designed, even though the signal is erroneous.

Just thinking out loud, and this may not be how the locking system is designed. But it's easy enough to rule out by removing the batteries from the remotes.

 

Thank you SO much for all the advice, it is very much appreciated. Looks like I’ve got enough homework to keep me out of trouble for a good while!!

 

Gosh, thanks for the steer! Really appreciated. I’ll try and remember to keep you informed - tough these days to remember anything though!!

 

Many thanks Karl, I have replaced the overhead switches and the controller in the boot, and the light stays illuminated. Wondering if this too could be the result of some ugly work on the rear suspension! I will probably save up my pocket money and get someone who is more able to take a look and then get up straight away again! Will let you know of any progress!

 

I’ll certainly check this out, and if I’m able to conclude anything, I’ll keep you posted. Many thanks for your input!

 

"the DSC light flashes constantly, so of course the cruise control is inoperative. I have been advised that since the car has recently had new rear wishbones and bushings, the DSC could be indicative of a need for rear suspension alignment? Again and advice would be hugely appreciated!"

The Flashing DSC light is more indicative of the DSC Calibration softwear being wiped, when someone has attempted to clear the fault codes, or replaced the ABS module.
Errors and solid DSC fault message indicates a fault which requires correction and will clear once repaired. Code reader to idenify which one.

Sounds like you have a number of faults. The code reader may shed some light, if not electrical wiring dia and point checking.

 

Many thanks! If the car's a bit of a basket case, I’m hot on its heels now!

 

Reverted to the separate remote and key which has always worked perfectly other than arbitrarily deciding when it will open and close windows and sunroof!

Then the Separate remote is configured, such as hold down for X seconds (3-5sec) and all windows and the sunroof open.

Try just pressing once for less than 3-5 secs. and /or changing the battery on the key fob. (one, DL 2032, 3v,) and clean the contacts once open. Then see if it works any better.

see the link below,


https://www.jaguarforums.com/forum/s...s-61017/page2/

The lists…

Tricks…

- When you push and hold (3-5 sec) the unlock button on the key fob all windows and sun roof open.

- When you push and hold the lock button on the key fob all windows and sun roof close. (MY2002.5 & up dealer activated)

- At anytime during either process you can tap the button again and they stop at desired location. (btw, once they start to move you can let off the button.)



Thank you for a most entertaining post.

 

The Car, S type 3ltr V6 is worth saving, a thoroughly great Jaguar drive. Especially on those fleshy 255/55/16s.
It does not sound too bad, just some niggles which need sorting.
Work your way through them with the assistance and support of the forum.