"Transmission fault" warning light goes on after driving a distance. on 2001 Jaguar S-Type

Warning light goes off after engine is off and cooled. Also smell of solvent or plastic especially when first starting. Had transmission rebuilt about a month ago and transmission repair shop says they find nothing wrong. Transmission does seem to act fine.

Asked by for the 2001 Jaguar S-Type
sounds like trans is poss overheating poss trans cooler is have a warranty return and have it ck make sure you get paper work from them stating all is ok for future reference in case there is a trans failure
Thanks very much for the advice. I will have them check the cooler.
1 more answer
Check transmission fluid level.