florianschmidt34
SupraIV electrical issues
Summary of the thread
A 2019 Toyota SupraIV is experiencing sporadic electrical issues, including random error lamps, unresponsive control units, and failures in the audio/navigation system. The problem is identified as a BUS system issue, potentially caused by a defective cable connection to the control unit. The suggested solution is to inspect the cable connection and, if unresolved, seek professional repair at a workshop.
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4 comment(s)
florianschmidt34 (community.author)
Yeah, I was able to get the error codes read at a friend's garage. The error log mentions a BUS system problem. You are right! Where exactly was the BUS system problem?
dirkfuchs3
For me, it ended up being a defective cable connection to the control unit, which connected to the BUS system. If it is this, go to the next workshop. My workshop charged me 155€ for this repair.
florianschmidt34 (community.author)
Thanks for the info! I'll check the cable connection to the control unit, and if that doesn't resolve it, I'll take it to a workshop. Very helpful!
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TOYOTA
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SUPRAIV
dirkfuchs3
Hey, I had something similar happen with my SupraIV a while back. Were you able to pull any specific error codes? It sounds like it could be a BUS system problem. Is the check engine light on?