RX300 Climate Controls not working
Thread Starter
Driver School Candidate
Joined: Apr 2021
Posts: 1
Likes: 0
From: Indiana
RX300 Climate Controls not working
Hello and hoping someone can help me out. Recently my 2001 RX300 Display screen, climate controls, daytime running lights and power locks have all stopped working at the same time after installing a new battery. I'm hoping it is just a bad fuse, but could anyone help me out with narrowing down which fuses I should be looking at? I recently got the car from my grandmother and do no have the owner's manual, and the internet hasn't been very helpful with figuring out that kind of information.
CL Community Team
Joined: Apr 2001
Posts: 16,576
Likes: 1,393
From: Austin, TX
Welcome to Club Lexus.
Please contact Lexus corp to get a copy of owner's manual. Also check out our sticky threads with RX300 info .. there may be a link for a soft copy. If I happen to run across it, I will post it here.
If the battery was hooked up wrong [swapped terminals ... even for an instant] you may have blown a larger fuse. Smaller [sub-circuit] fuses are tucked behind the coin box ... left knee of the driver and the major fuses are in the engine bay ... short distance from the battery ... over the driver side front wheel well. A few of the major fuses are bolted in ... you have to remove the fuse box to gain access.
Purchase a test light ... and simply go over the fuses. Most of the things work with the key in the run position. If the test light lights up on only one side [two terminals of the fuse] that fuse is popped. If both sides do not light up, then go back to the main fuse.
I hope your problem is simple, else you will need the circuit/wiring diagram to trace.
Salim
soft copy link https://drivers.lexus.com/t3Portal/d...f/OM48442U.pdf
Please contact Lexus corp to get a copy of owner's manual. Also check out our sticky threads with RX300 info .. there may be a link for a soft copy. If I happen to run across it, I will post it here.
If the battery was hooked up wrong [swapped terminals ... even for an instant] you may have blown a larger fuse. Smaller [sub-circuit] fuses are tucked behind the coin box ... left knee of the driver and the major fuses are in the engine bay ... short distance from the battery ... over the driver side front wheel well. A few of the major fuses are bolted in ... you have to remove the fuse box to gain access.
Purchase a test light ... and simply go over the fuses. Most of the things work with the key in the run position. If the test light lights up on only one side [two terminals of the fuse] that fuse is popped. If both sides do not light up, then go back to the main fuse.
I hope your problem is simple, else you will need the circuit/wiring diagram to trace.
Salim
soft copy link https://drivers.lexus.com/t3Portal/d...f/OM48442U.pdf
Last edited by salimshah; Apr 12, 2021 at 04:01 PM.
Driver School Candidate
Joined: Jan 2021
Posts: 12
Likes: 1
From: VA
The very first thing I would suspect is a bad ground for that system. It could be a fuse but if they are all ok, then checking your harness and finding where the ground is would be the next step. Do you have an OBD2 scanner that can scan for codes? It would be worth scanning all codes to see what pops up.
Driver
Joined: Jul 2018
Posts: 83
Likes: 10
From: South Carolina
Fuses for RX300
Hello and hoping someone can help me out. Recently my 2001 RX300 Display screen, climate controls, daytime running lights and power locks have all stopped working at the same time after installing a new battery. I'm hoping it is just a bad fuse, but could anyone help me out with narrowing down which fuses I should be looking at? I recently got the car from my grandmother and do no have the owner's manual, and the internet hasn't been very helpful with figuring out that kind of information.
Driver School Candidate
Joined: Apr 2019
Posts: 5
Likes: 0
From: Bandung
Hello and hoping someone can help me out. Recently my 2001 RX300 Display screen, climate controls, daytime running lights and power locks have all stopped working at the same time after installing a new battery. I'm hoping it is just a bad fuse, but could anyone help me out with narrowing down which fuses I should be looking at? I recently got the car from my grandmother and do no have the owner's manual, and the internet hasn't been very helpful with figuring out that kind of information.
Edit: I must add that there is another fuse panel behind the coin/money drawer or something, I don't know what it is called. Very easy to remove.
Good luck!
Last edited by qoqzgood; Apr 15, 2021 at 12:55 AM.
Driver School Candidate
Joined: Mar 2022
Posts: 1
Likes: 1
From: VA
2002 RX300 - Climate Controls Out, Auto Locks Out, Display Out
Just as described by many on this blog. Was a simple 15 amp fuse. Started the car last week thinking that my auto-door locks had just died - as the fob beeped and it sounded like the locks had opened but none of the side doors had (only the trunk hatch still operated). Luckily, there is the old manual key. Started the car fine but the central climate display lit up but had no writing/text. AC/heater and fan did not work. Auto door locks made not a sound. CD player worked fine though - and the cigarette lighter still lit up. The thermostat temperature gauge was also dead. Looked at a few other fuses but eventually after replacing the CIG fuse everything came back to life. Awesome.
Driver
Joined: Jul 2018
Posts: 83
Likes: 10
From: South Carolina
Display & Controls RX300
Hello and hoping someone can help me out. Recently my 2001 RX300 Display screen, climate controls, daytime running lights and power locks have all stopped working at the same time after installing a new battery. I'm hoping it is just a bad fuse, but could anyone help me out with narrowing down which fuses I should be looking at? I recently got the car from my grandmother and do no have the owner's manual, and the internet hasn't been very helpful with figuring out that kind of information.
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2nd gear
Joined: Dec 2022
Posts: 2
Likes: 0
From: AL
Same Issues
Just as described by many on this blog. Was a simple 15 amp fuse. Started the car last week thinking that my auto-door locks had just died - as the fob beeped and it sounded like the locks had opened but none of the side doors had (only the trunk hatch still operated). Luckily, there is the old manual key. Started the car fine but the central climate display lit up but had no writing/text. AC/heater and fan did not work. Auto door locks made not a sound. CD player worked fine though - and the cigarette lighter still lit up. The thermostat temperature gauge was also dead. Looked at a few other fuses but eventually after replacing the CIG fuse everything came back to life. Awesome.
which 15 amp fuse was it and where was it located? Please and thank you!
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