GS450h TPMS issues

[Couchie]

Grateful for any advice. My 2007 GS has recently thrown up a Check System error. I have no Lexus dealer nearby so thought I'd go to my nearest Toyota dealer to get the system diagnosed. Unfortunately neither of the nearest dealers say they can do diag on the Lexus TPMS system and have referred me to Lexus Main dealer. My local Halfords' TPMS Machine can't interrogate the GS' TPMS module.

Are there any alternative or am I left with the only option of going to my nearest Lexus dealer?

 

Many thanks in advance.

[Mossypossy]

Good news is it is not an MOT fail.

Just a minor annoyance.....as long as the tyres stay inflated.

Cost to get rid of light is too much in my opinion. (My light is on).

[OldTrout]

Philip,

Britprius will probably respond shorty by my guess would be that the sensor(s) Battery has expired - it is 13 years old.

They can be replaced if you can manage some DiY. If not you will need new sensor(s) and which the car has to be told about.

John

 

 

[Upex]

Or get techstream and reset them. Mine then take weeks to flag back up 🤣 so I reset again and off we go.

More than likely a duff Battery or 4, mine is an 06 and one Battery went 2 years back, other 3 still going but low. I'm waiting till tyres need done and will swap all 4 batteries DIY via the scrape and pot method on here. Would be done by now but lockdown and having car off road for long time to do the transmission pump bearings lowered my mileage a lot last year and this.

[Couchie]

Thank you to all who have replied. I am trying to get Techstream but 64bit driver issues seem really difficult to crack (not being an IT expert) and once installed and working I will do the reset and eventual Battery change. I was glad to learn that they're not an MOT failure on a car of mine's age. It just annoying that Toyota would not help - especially as this car is a Toyota Aristo and also annoying, given that TPMS systems are now mandatory, that diagnostic machines at tyre specialists/garages don't seem able to address what will be a common issue.

Does anyone know whether the sensors are specific to the GS450h (I've been given part number 42607-05010) but wonder if there are any other 433mhz sensors that will work with this car?

[Mossypossy]

ID has to be a 7 digit hexadecimal number, and presume frequency will have to be 433mhz.

Best to get a cheapie tyre pressure monitor system. At least that tells you WHICH tyre is low if a light is triggered. 

TPMS code readers seem to be specific to certain types of system so any particular tyre fitting shop would need several different readers.

[Britprius]

5 hours ago, Couchie said:

Does anyone know whether the sensors are specific to the GS450h

Hi Phillip.
Replacement genuine sensors are not cheap, and after market versions are around £40 each.

The cheapest way around the problem, but keeping it OEM is to go to your local tyre fitter, and get them to replace all the valves with standard rubber valves as a temporary keep you on the road. Then replace the batteries as in the original valves as in the post linked below. These can then be refitted to the wheels.
Total cost for all 4 sensors will be around £5.

John.

[Couchie]

Thank you John, for this. Very helpful. This is route I will take I think.

[Initial P]

I had the same error come up some months back but my indy was too busy to check it & in the meantime I fiddled with the other tyre button under the glove box (for changing tyre types snow/normal) and got it to clear HTH 😀

My conclusion was the other button just had a dry joint from where it had never been used.

[Mossypossy]

I got it to go out using the spare button. But light came back after 20 miles.

You just need to decide how much you want to spend to extinguish a warning light that most of us have driven for 40 years without needing.

[Couchie]

Thanks again for the advice. I'll try the other buttons in the glove box and see what happens. You're right about spending on something we've lived without for years but the red light and flashing yellow light constantly catch my attention when driving. I either learn to ignore it, or bite the bullet and address the problem by replacing the batteries/sensors. My new Autel OBD reader/coder might also help. Thanks to everyone who's chipped in.  Much appreciated.

[Couchie]

By way of a final word on this topic, I bought a cheap (ish) Autel Ap200 OBD2 reader, paired with the Autel App on my phone. This interrogated the TPMS system, showed nothing untoward other than a fault code, but all sensors were showing life. I cleared the trouble code and so far it has not returned. Fingers crossed. Thank you to all who offered words of wisdom - much appreciated.