I have a 2005 xk8 Conv. The low engine coolant light is on and the coolant is full. Is it the sensor???

 

What is your mixture? to much water than coolant can make the sensor not float.

 

The video I saw showed a guy with a cup of water and a cup of coolant. The sensor would not float in the water but did float in the coolant. After I siphoned out my mix and added pure uncut Dex Cool my light went out....been out ever since.

 

You can also jab the magnet float a few times. It's been know to get stuck.

 

Yes, Fish around in the coolant expansion tank with a screw driver. You may dislodge the float from the bottom or pick up the loose magnet that has fallen into the tank.

Putting a magnet on the sensor is a good test to see if its working properly/ The light will go out when a magnet is held near the sensor.

 

Welcome to the forum crg,

Low coolant light on + Expansion Tank full = faulty sensor or disconnected harness connector.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some info about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

Here is another thread on the same topic you might find useful

https://www.jaguarforums.com/forum/x...cement-178590/