For a change nothing was done on my xk I simply drove it and parked the car haha ... although found a suitable replacement during my morning walk !!

 

OK so having looked at the CCF of both the 4.2L and the 5.0L, neither version has the field "INSTRUMENT_4_LOW_COOLANT_WARNING" in use.

This tells me two possibilities;

#1 the low coolant warning function is built in to the instrument cluster software and is not a feature that can be enabled or disabled. The feature may or may not be present in the 4.2L cluster.
#2 the switch function is closing the circuit to trigger the warning (which is a little counter intuitive) in which case, grounding the pin on IP032/14 would/should trigger the warning.

I found this in the 5.0L workshop manual Engine Cooling section "If the coolant level in the expansion tank decreases below a predetermined value, the level sensor connects a ground to the instrument cluster, which activates the appropriate warning. For additional information, refer to 413-01 Instrument Cluster."

When you check section 413-01, it's contradictory... "A warning message is also displayed in the message center if the coolant in the expansion tank falls below a given level. The instrument cluster is hardwired to a level switch in the expansion tank with feed and return connections. If the switch opens the instrument cluster detects the low coolant level and displays the applicable message."

So I guess it's possible, but i'd have to pull out the instrument cluster and test it, also have to try to find the right terminals for that connector...
Or get hold of a 5.0L and try unplugging the sensor, and grounding out the wire at the sensor. Actually both tests would be a good idea...

Any chance you can post up some detailed pics of the sensor, and confirm how it functions? normally closed, normally open, etc?

 

The attachment points for the Jaguar branded CTEK are in this PDF. As others have said, it is to do with the battery management system but in reality it does cope OK if you just wire it up to the negative terminal.

 

Thanks for the attachments, I'll see if i can get the longer leads to do it properly, will naturally look at CTEK first as am sure from Jaguar it's 4 x the price!

Am guessing this is the thing, but the lead doesn't look much longer than the stock one:

https://www.ebay.co.uk/itm/CTEK-8-4m...aDv~:rk:1:pf:0

 

I used the module chassis on the right side of the battery to ground out the negative Ctek wire. Any one of the screws will work just check the ground with a meter.

 

Installed my new ceramic akebono brake shoes this weekend. Smooth.

Which leads me to a question:

Is there no low brake sensor on the Jag? There were no pad sensors. I ask because one pad was down to bare metal, but no warning from the car.

 

On my X100 there were only wear sensors on the fronts IIRC?

So do tell where you got your Akebono's from with a link and part numbers...I can't buy them this side of the pond sadly

 

I got them on ebay:

Of course I have a 2008, so your parts may be different.

https://www.ebay.com/itm/29277863035...m=292778630356
https://www.ebay.com/itm/29277863061...m=292778630618

 

 

All shiny again.

 

Mine's shiny again also:

 

As I recall the wear sensors are opposite sides of the vehicle. Right side on rear pads and left on the front.
Maybe someone else can detail to be certain though.

 

Here are three photos. The resistance across the two pins in the socket is infinite. I have no idea how this sensor works, it fits into a hole in the reservoir but does not appear to have any contact with the actual coolant, since it is possible to remove the sensor without causing a leak.

The sensor is almost 3-1/2 inches long.

Two pins in the wiring harness socket

Here is the tip of the sensor, looks like a wire running the full length.

 

There's nothing in the workshop manual to explain its operation, but it looks similar to the oil-level sensor. That is ultrasonic, so this may work the same way, i.e. bouncing ultrasonic pulses off the liquid/air boundary.

 

Well my battery is defo on it's way out, with 500 miles of driving with no lights on (and a hardly listened to the stereo, preferring the soundtrack of my engine!) it gave me a 'low battery' message.

So will be replacing with my spare (fully charged ) type 19 when returning home on Saturday morning, for now it's on CTEK charge and is getting as far but no further than 6. So it will take a charge but simply not hold it.

Also notice that the passenger seat backrest doesn't move as far forwards as the drivers one, it reclines fine, I don't think it's the common problem with seats but suspect just a motor that needs replacing. Any suggestions would be appreciated...in the meantime will do a few forum searches

 

There were none on my car. At least not attached to the shoes. I changed all four wheels.

 

shoes??

Interesting because they show up on the parts list for your car. Item #16 :
https://www.jaguarlandroverrenoparts...nt-brakes-scat

 

Per the service manual, there are no wear indicators on the front or rear wheels.

 

Deleted comments as they were repetitive of post 502

 

Shoes, pads, its all the same.

Maybe it is only on 355MM brakes. I don't know if mine are 355MM or not, but there are no sensors on the pads. That I can attest to.