Hello mates,

I just purchased GS300 2005 (MK3) with 92K miles on dash. Car runs and shifts smooth but got MIL + TPMS + VSC + airbag lights on. The old owner took off all the TPMS Sensor as he said it was not working. Can I buy any aftermarket TPMS sensor and re configure it using TechStream ? I was thinking to do 100k Service from Lexus for 600 gbp is It worth it ? Any advice and suggestion is welcome.





Error Code
P0420 and

 

If youre going to buy aftermarket tire pressure sensors, I would purchase original denso, they cost me $30 each of rockauto. I would avoid any no name tire sensors, as you dont know what you are buying if you plan on keeping the car for awhile. You will end up spending more, trying to save money. Before installing them, snap a clear pic of the serial number of each sensor. You will need to register those 4 numbers into your techstream.


For your airbag I found a video online that may help
the B1421 others have mentioned it in the forum and they say to just avoid it. https://www.clublexus.com/forums/gs-...uit-error.html

 

Thank you for the response, The video is very helpful and hopefully will try to fix it this weekend. About TPMS the denso are bit over priced here like 70 gbp just for the 1 sensor, Thats why I am planing to get aftermarket. Definitely, I am keep the car for longer period of time. I don't mind driving without sensors but I hate warning lights on dash.

 

I would replace all the sensors at once, because if one is bad then the others are on there way. In the end its cheaper to replace them with a good quality part vs buying twice, of a cheaper unknown brand. These sensors have batteries in them, when you buy unknown sensors you do not know if these batteries and circuit board is good quality and if it will even last.