New member with Rx400h

[crosscyl]

Hello Forum ! Found my way here after I came across https://www.lexusownersclub.co.uk/forum/topic/106977-warning-lights-electrical-problems/ which describes absolutely EXACTLY as what I experienced with mine. Hopefully I will be able to navigate my way to getting to the bottom of it. Any help along the way will be most welcome. Many thanks in advance.

[steve2006]

Hello Andy and welcome to the LOC.

[crosscyl]

Currently going through another episode of this 🤨. Been to a specialist previously about it - no joy. No water ingress. No one  seems to know what this one’s about. Rare one but certainly not totally unheard of as the above threads all describe the same very specific features. One to ignore I suppose as car is flawless otherwise. Just really annoying as boot can’t be opened during ‘the episode’ (can last one day or more) until it eventually self resolves itself, no memory seats during it, only driver’s window works from driver’s panel. Other windows only work from individual doors. My hunch says its a faulty control module somewhere which plays up only randomly without any links or asscoiations or triggers. The codes don’t persist. Indy said there was something which suggested some voltage variations but he couldn’t nail the root cause. Exhausted the forums. Doubt even a main dealer will nail this one. How frustrating. Anyone up for a challenge to try figure / diagnose this one (in person or remotely) - feel free to get in touch - I’ll more than happily drive some distance to have this never occur again !! I’d hate to sell it onwards to an unsuspecting buyer like this. Almost certain why the private seller I got it from shifted it. Can be episode free for months ...so would be very easy to shift onwards. Any clues or suggestions gratefully appreciated, many thanks !!