I have a 1997 Passat TDI purchased used in 2000. I suspect it had been leased prior to 2000 and not particularly well-treated (lots of bodywork scratches, broken cupholder, handbrake ineffective, plus a few other defects, none of which the dealer was prepared to correct but I bought it anyway). I have been through the usual Passat problems â€“ 109 relay, failed air conditioner compressor, new ignition switch and starter relay, door lock problems, etc. For the past few months I have experienced the failure of all the instrument panel units which come through the J265 module. That is, no operation of any of the following: speedometer, tachometer, odometer, clock, trip meter, fuel gauge, temperature gauge, oil pressure warning light. However, in the summer when the outside temperature gets to above 90F for awhile, there is a hoarse rustling sound from somewhere under the dash and all the instruments start operating. As soon as the outside temperature drops the instruments stop operating. I think there must be a temperature-sensitive relay controlling the J265 module somewhere which should be replaced. I would appreciate any help anyone can provide in identifying the cause of this problem and how to correct it. Many thanks in advance.