TPMS warning light & buzzer question

[Marco SC430]

Hi all,

After a gap of 10 years, I'm on my second SC430 - a 2003 model. I bought it with after-market alloys and the TPMS warning light was lit up - a solid yellow light - which I can live with - I've seen the video on YouTube to simply disengage the system but I didn't bother as it just got noted as an advisory  (the only one) when the car passed its MOT. I had the car garaged through winter during which time the Battery went flat - recharged the Battery - start the car and now the TMPS warning light flashes and beeps every couple of minutes which is annoying - so now I'm thinking maybe I'll just do the fix in the video but before I do, a couple of questions. 1) If the system is disengaged as it's a pre legislation model does it make any difference when you take the car for MOT // 2) I don't mind the yellow light being on, is there a way to restore it to that state? My OBD scanner doesn't read any fault so that's no good to me. In general what are you people with models of a similar age with after market alloys doing about TPMS?

Thanks in advance for any advice - I live near Epsom in Surrey so if there's an independent Lexus specialist in the area anyone knows of who can be recommended for future work this would be useful - car is booked into Croydon Lexus for the airbag recall fix and no doubt they will propose a £££££ solution for the TPMS issue.

Cheers

 

[TDP]

Hi Marco,

 

I took mine in for the airbag recall a week ago and the dealer (Lexus Reading) noted the TPMS was inoperative because I have aftermarket wheels - apparently it's not an MOT issue which is supported by my car having passed the MOT as it is. Mine is a 2006 model and the light does not come on - not sure how it was disabled though. Hope that helps.

[2ddesign]

Hi

My SC 430 was in for the airbag recall and the fitter reported the plug behind the dash had been disconnected from the system, so no warning light!

Not that I have any sensors on my wheels....

2ddesign

[Marco SC430]

very helpful guys - thank you very much - I think I'll go ahead and unplug the system

[Neil E]

Yes it's as simple as that and not an MOT failure. Some of the cheap after-market TPMS systems are worth considering. The sensors replace the dust-caps and send a signal to a fairly discrete pressure monitor.