gemmia

Hello All, and happy new year😊. Just thought I'd bring this up to date, no change I'm afraid but I've learnt loads about the car and its niggles. It spent 3 weeks with an Independent Lexus Garage and they replaced the park / neutral switch and tested the wiring / earths all to no avail. They told me that they have a relationship with the local Lexus Dealership and took it there. Lexus recons the ECU is damaged and needs replacing but at circa £3k that's not worth doing and I got the impression it was a guess anyway. I've toyed with the idea of removing the ECU and having it bench tested and repaired if possible but sadly I'm running out of enthusiasm and time. On the positive side I'm down to 1 error code P0705, the rest appear to have been eliminated by whatever the Indy garage have done, but the symptoms are all the same. As a last ditch does anyone know of anywhere to get the ECU looked at?

Thanks for all the input and suggestions everyone. I took the kicker panels off over the weekend and cleaned all the connections. Went through the vehicle to find, examine, clean and re-seat as many earths as I could but I'm no expert so I'm not really sure if it helped. Bottom line is I need to find an auto spark who can go through the vehicle properly with the right kit and one who hasn't diagnosed it as a lost cause before I even get there. Any suggestions, I'll pretty much take it anywhere but I'd like to find someone within 50 miles of me, I'm in Lancs postcode L40 ........

Hi Spudd, thanks for that I'll give it a go - nothing ventured noting gained. I've had the battery tested at Halfords and it's AOK, apparently it was replaced in February this year so all good there. I also took it to Ribblesdale this afternoon. Despite speaking to them this morning, outlining the problem and telling them what vehicle it is, I arrived to be told - "we can't help you we don't have any software for the gearbox on a Lexus you will have to take it to a dealer"! Very frustrating and not my historical experience of Ribblesdale, they are normally on the ball. So that brings me to the next question, should Spudd's suggestion not work, does anyone know of an independent Lexus specialist in my neck of the woods, Lancashire, Cheshire, Merseyside, Greater Manchester or anywhere really, that might be able to help before I mortgage up for a trip to Lexus.... Thanks again

One with too much work I guess 😡

Thanks for the tips guys, I'll have the battery checked at Halfords and give Ribblesdale a call, I'm in Ormskirk so not too far away. I've taken to two local auto sparks this morning one can't look at it until the middle of the month and the other didn't want to know! I'll keep you updated as things progress 🤪

Hi Mark, I was considering taking it to an auto spark for advice. To answer your questions: The vehicle has done 165000 miles I don't believe the transmission has ever been out of the vehicle for service, just routine fluid & filter changes I'm assuming. It's starts fine, shifts fine and drives fine both forward and reverse. The only mechanical issue is that it will stall if you change the gear i.e. start, reverse fine then pull it out of reverse into drive and will still instantly. The same is true if you take it out of drive and try and select reverse. It's now started putting the neutral light on with any selected gear, D/R/M which is either new or I've never noticed that before 😁 Turning off the LPG does nothing to solve the issues it's the same using Petrol or LPG. This has been an issue before if there has been a fault on the LPG system it's does manifest some strange codes but using it on the original petrol side clears those and highlights that the issue is the LPG system. This time it's both systems! I appreciate the input though. The radio side of it is really throwing me but does suggest it's a wiring problem, do you know of any other amp fuses not located with the main fuse boxes? Cheers Dan

Hi All, I'm brand new here and not sure if this post is int he right area so please forgive me if not. I used to own an RX300 (2003) that I gifted to my father when I moved on to a newer vehicle. The problem is when the RX has an issue it becomes my car again and that's the case as of this weekend! It appears to have a list of issues as long as my arm all point to an electrical issue but the problem is where to start, I'll list the symptoms and codes below: Symptoms: Radio comes on and tunes but has no audio - Sat Nav has audio The instrument panel lights (not ignition) do not come on until the car is taken out of neutral When drive or is selected both the drive and neutral lights light up for anything from 20 seconds to circa 60 seconds then drive only It will stall out when shifting to reverse from drive or drive from neutral, will restart in park and be fine as long as it stays in drive or reverse. Fault codes 1-8 I'm not sure if the sequence is relevant: 1)P0335 2)P0340 3)P0345 4)P0705 5)P0335 6)P0340 7)P0345 8)P0705 So basically 4 fault codes which if my modest reader is correct are: Crankshaft Position sensor, Camshaft Position Sensor & Transmission Range Sensor. I've been through all the fuses in the passenger bay and engine bay, they are all good I should add that the car has an LPG conversion, originally in 2006 and then refreshed in 2014. When in drive and running it pulls as it should and gives no issues, i.e. missing or stalling. Check engine and VSC lights are permanently on and fire back up moments after clearing the faults. I'd appreciate any insight anyone might have as to whether one of these components could cause all these issues! Thank in advance Dan

Thanks I appreciate the pointer, I'll move it across Cheers

Hi All, I'm brand new here and not sure if this post is int he right area so please forgive me if not. I used to own an RX300 (2003) that I gifted to my father when I moved on to a newer vehicle. The problem is when the RX has an issue it becomes my car again and that's the case as of this weekend! It appears to have a list of issues as long as my arm all point to an electrical issue but the problem is where to start, I'll list the symptoms and codes below: Symptoms: Radio comes on and tunes but has no audio - Sat Nav has audio The instrument panel lights (not ignition) do not come on until the car is taken out of neutral When drive or is selected both the drive and neutral lights light up for anything from 20 seconds to circa 60 seconds then drive only It will stall out when shifting to reverse from drive or drive from neutral, will restart in park and be fine as long as it stays in drive or reverse. Fault codes 1-8 I'm not sure if the sequence is relevant: 1)P0335 2)P0340 3)P0345 4)P0705 5)P0335 6)P0340 7)P0345 8)P0705 So basically 4 fault codes which if my modest reader is correct are: Crankshaft Position sensor, Camshaft Position Sensor & Transmission Range Sensor. I've been through all the fuses in the passenger bay and engine bay, they are all good I should add that the car has an LPG conversion, originally in 2006 and then refreshed in 2014. When in drive and running it pulls as it should and gives no issues, i.e. missing or stalling. Check engine and VSC lights are permanently on and fire back up moments after clearing the faults. I'd appreciate any insight anyone might have as to whether one of these components could cause all these issues! Thank in advance Dan