Instrument cluster temperature
#1
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The brightness of the instrument cluster seems to regularly go dim in my 2002 XJ, with a P1238 error code suggesting instrument cluster is over temperature and dims the backlighting to help control the temperature - but this happens on warm and cool days.
I looked up live data and see the instrument cluster temperature moving around like crazy, so I assume a faulty sensor. Anyone dealt with this before?
I guess I'll remove the dash and see whether there's anything to be seen... but I'd assume a temperature sensor is unlikely to be a replaceable item.
I looked up live data and see the instrument cluster temperature moving around like crazy, so I assume a faulty sensor. Anyone dealt with this before?
I guess I'll remove the dash and see whether there's anything to be seen... but I'd assume a temperature sensor is unlikely to be a replaceable item.
#2
#3
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I certainly hope so. I can’t find a schematic showing where the thermistor is situated yet. Would it be in the panel somewhere, or a module controlling backlighting perhaps?
#4
#5
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#6
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Jeremy Solly (08-07-2023)
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#8
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#9
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This forum is full of good people - glad to be part of such a group.
Thank you,
Jeremy
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motorcarman (08-08-2023)
#10
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Interesting and just a side note?
I have a late model XJ (X351) and in that car Jaguar ran cooling ducts to the backside of the drivers IP and the center navigation stack inside the dash board. So it looks like a fix/upgrade for an earlier known problem.
I only got into this because people (Including me!) have replaced the navigation screen with a larger after market Android tablet. Some units you had to swap the OEM boards over to the tablet. This kept the panel cooling working as designed. Others have just stuck a tablet in and many suffer heat failures because of no cooling.
I had never heard of such a thing before and here over 20 years ago Jaguar was already monitoring it!
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.
.
I have a late model XJ (X351) and in that car Jaguar ran cooling ducts to the backside of the drivers IP and the center navigation stack inside the dash board. So it looks like a fix/upgrade for an earlier known problem.
I only got into this because people (Including me!) have replaced the navigation screen with a larger after market Android tablet. Some units you had to swap the OEM boards over to the tablet. This kept the panel cooling working as designed. Others have just stuck a tablet in and many suffer heat failures because of no cooling.
I had never heard of such a thing before and here over 20 years ago Jaguar was already monitoring it!
.
.
.
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