2000 S-type coolant level sensor elimination

2000 JAGUAR XJS
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GARYGABLE
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  • 1 POST
The coolant expansion tank on my 2000 S-Type was replaced, but the replacement tank has no place for the coolant level sensor. A Jaguar service bulletin shows that the sensor has been "eliminated" so now this is the only type of tank available. But with the sensor disconnected (or even connected and not in liquid) a low coolant level warning message appears. How can I actually eliminate the sensor, which is an optical sensor, in such a way as to eliminate the message?
Jan 25, 2006 at 3:17 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
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try capping the optical end of it
Jan 31, 2006 at 9:45 AM
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FSTRANGER302
  • ✓Experienced Mechanic
  • 117 POSTS
you need to cut the wiring for the low levell sensor. and tape off. also you need to have ecm reprogramedd to shut off the low levell sensor.
Sep 20, 2006 at 1:57 PM
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Suggested Repair

Cap the optical end of the coolant level sensor, or cut and tape off the low-level sensor wiring and have the ECM reprogrammed to disable the low coolant level sensor.

Conversation Summary

The owner of a 2000 Jaguar S-Type replaced the coolant expansion tank with a later tank that has no provision for the optical coolant level sensor, consistent with a Jaguar service bulletin that eliminated the sensor. With the sensor disconnected or not in liquid, a low coolant warning appears. Experts suggested capping the optical end of the sensor, or cutting and insulating the sensor wiring and having the ECM reprogrammed to turn off the low-level sensor function.

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