LS430

Gents, the culprit has been found. The thing I should've done straight away, is to take the fusebox apart. Like...immediately after turning the lights on and seeing that something's up, and especially after finding a leak. Here are some pictures after the fusebox and the PCB has been cleaned thoroughly with isopropyl alcohol and a toothbrush. It looked absolutely filthy and definitely had some serious leak damage. I'm currently trying to source one on fleaBay to replace and hopefully that sorts all my issues out.

Guys, I think I may have found something... Any thoughts? video-1611082497.mp4

This is what I was thinking, however I've checked it and it's ok. And I've immediately after noticing this went to try the sunroof and that works...

Thanks guys for the replies, I've disconnected and reconnected all the relevant ones in the boot, nothing. I'm sure that these aren't individual faults, but actually all related. Rear Sunshade, SatNav, Tail Lights, Stop Lights, Reverse Light, A/C, Heated Seats, Fuel Door Opener, Fuel Gauge. Do these have anything in common as far as relays and such? The SatNav I couldn't care less about Phil, it's the tail lights, reverse light and stop lights that prevent me from the car's last MOT. 🙄

Guys, we've done some measuring today and the light bulbs get 12V, both relays in the boot show 4.5 Ohm. I've noticed that there is still a little bit of dampness in the boot, so I'll pick up a dehumidifier tomorrow first thing and I'll lock it in the boot for a good few hours. Once everything's crispy dry, I'll start looking again at issues.

https://fuse-box.info/lexus/lexus-ls430-xf30-2000-2006-fuses-and-relay Engine Compartment x2 Passenger Compartment x2 Boot x1

Hey Mark, firstly thanks for the reply. Yes, I've noticed the satnav drive in the boot, I've removed all the boot liners, so now it's just bare metal exactly for that reason, to make sure everything is completely dry. My battery should be fine, it's an Optima Red Top RTC 4.2 racing battery from my RX-8 that I've taken off the road for winter. I'll try the battery reset now, and I'll get the seal sorted as well as soon as it stops raining.

Good afternoon everyone, I'm having an issue with my 2002 Lexus LS 430. There was an unfortunate leak in the trunk, the car's been parked up for a few weeks so I didn't notice straight away. I've locked a heater in there for quite a few hours yesterday and now it's bone dry again. I know for a fact that all the bulbs are working, so there could be no issue there. Hazards work, however the stop lamps and tail lights, and the reverse parking light also doesn't. I've checked literally all the fuses in the car, all are in order. I've got in the car today, had it idle for about 40 minutes on the driveway, but the heater still blew ice cold air when I went to turn it off. The satnav screen doesn't work on "MAP [VOICE]" mode (it's just black), but it does show settings etc when that's selected. Does anyone have a clue what could this combination of errors lead to? Where should I start looking? TIA