Hello All,

I have a 2006 LR3 equipped with TPMS. During my short ownership so far (10 months), I have never seen any TPMS warnings or fault displays on the instrument cluster.

Last weekend I purchased and installed another set of wheels/tires that were originally on a 2009 LR3 with TPMS. I expected some kind of warning lights while the system “learned” the new sensors, but there was nothing. It makes me wonder if the system isn’t working. Per my GAP IID tool, there is a fault in the system:

C1A64-93 (68) spare wheel tire pressure sensor and transmitter assembly - component failure - no operation

Other faults in the instrument cluster:

U0102-87 (2C) lost communication with transfer case control module
U0132-87 (2E) lost communication with ride level control module
U0127-87 (2C) lost communication with tire pressure monitor module

Shouldn't I be seeing an error message related to the TPMS faults?

 

Ignore the lost communications faults, those are sorta common background faults that usually mean nothing at all. You can certainly clear them though.

Since you have a GAP tool, open up the live values and see what its reading for each wheel. Also I could be wrong, but I thought 2009 moved the system to a different frequency. The system is weird, its like it faults over silly stuff but other times it won't. I had a spare with no sensor and it never, ever complained about that wheel missing a sensor.

 

Here are the live values. Definitely some weird readings. None of these numbers are my actual pressures, but seems as though the system is functioning to some extent?

 

Yeah, dont ask why but those valves are never right - either GAP is not reading them right (likely) or there is some dark voodoo that LR does with the math. The unit could be working/failing. Meaning the TPMS module itself may have intermittent issues, a very common thing to happen. So maybe its starting with the spare. Or make the spare antenna has a wiring issue. I would verify the spare tire pressure, see if it really is low.