I just bought a 2000 rx300. It runs great but the multi display screen doesn't work nor does the radio, dome lights, visor lights or my keyless entry. I checked the obvious fuses and they are all good. Am I missing something? Please help if you have any suggestions.

 

Welcome to Club Lexus.

Can you please elaborate which fuses you checked in the engine bay and the panel inside.

Start by simple things like the dome bulb (check if the bulb is good).
How about cigarette lighter?

Salim

 

I checked the 10 amp dome fuse which goes to interior light, vanity lights, foot lights, rear personal light, gauges and meters, multi display. (my temp gauge and gas gauge work). I checked the ecu-b 7.5 fuse which goes to the multiplex computer. I checked the radio no 2. 7.5 fuse. Audio system multiplex computer. And ecu-if 15 amp fuse which goes to telephone, inside rear view mirror, antilock brake system,traction control system, multi display. I've not checked the dome bulb yet. Is it possible if the dome bulb is bad it would effect the other things even though they are good. It's - 4* here and not so quick to go outside yet.

 

When things warm up, you may like to check voltages too.

While you are in the warmth of inside home, try to locate warning diagram, Armed with voltmeter, you can trace.

Personally I prefer using a low wattage bulb. Since the bulb draws current (while a voltmeter practically draws nothing), the bulb is better to trace. My neighbor had a rusty connection on his trailer and the Fluke multimeter rerouted voltage without the load.

Salim