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My beloved 2011 IS250-C is indicating low tyre pressure with an orange symbol on the dash display. The symbol flashes then goes steady-state. I have checked all 4 tyre pressures, found them correct and added a few extra pounds however the indication remains. I have tried doing a reset without success.
It is probably a bad sensor in one of the wheels. Same thing happened to our 2012 IS350C a while back. A tire shop can check which wheel has the problem and replace the sensor. I think it was around $100 here in California...
I went to Costco who diagnosed one failed sensor and another with low battery. Both were replaced however their equipment would not marry these to the ECU.
The fitter told me this has been an issue with Lexus models but weirdly not with Toyotas. No safety concerns as the tires are holding pressure.
My local dealership would charge £185 ($ 300) for an hour's labor although this is a 5 minute job. Do you guys have any suggestions?
Sorry to hear that. It's not surprising that dealer charges 300$, considering you need a specific tool to register new sensors to your car. I personally use an Autel Bluetooth OBD tool, which cost about $50, and the BeadBuster XB-450 for changing the sensors myself.
Dealerships often charge a hefty sum for OEM sensors, and you could end up spending around $700 in total (Labor+parts).
I would leave it alone. I know it's frustrating to have that light on your dashboard, but the cost may not justify the fix.
From what I've seen the ISx50. They come factory set up for main, and winter tire setups.
The same ID codes are registered on both setups. Problem is after you get a failure, and replaced with a new one. It wipes all the codes. So you're stuck with them programed only on the "Main" option.
Please refer to this post, and look at the link added there. It instructs on how to set up a dual set of TPMS. Your manual that came with the car should indicate this aswell. I suspect your TPMS is set on "2nd" while the sensors are programed to be on "MaIn"
I recently replaced all four with new Denso for $75 shipped. Wrote down the sensor ID's in notepad and pasted that into Techstream 1 by 1and it took less than 4 minutes to register them all. It was pretty simple.
Then I handed the sensors marked Front and Rear to the tire guys and had new rubber installed. Problem solved. 350 production date was 2012-12, sold in March of 2013. Sensors were still working 2023-11 when they were replaced but showed mixed values for battery state.
Besides Costco, national chains of tyre shops can also do the programming. Try one of them. Best to do the spare as well as some years and models will give you a total error light if any single sensor is malfunctioning. Newer models are more wheel specific.
I went to Costco who diagnosed one failed sensor and another with low battery. Both were replaced however their equipment would not marry these to the ECU.
The fitter told me this has been an issue with Lexus models but weirdly not with Toyotas. No safety concerns as the tires are holding pressure.
My local dealership would charge £185 ($ 300) for an hour's labor although this is a 5 minute job. Do you guys have any suggestions?
Year, make and model? Does your UK version show actual wheel positions like the US model? What part number did Costco install?
Well, it seems with a curious mix of luck to judgement I have this sorted without a visit to a dealership.
The TPMS system hold data for two sets of tires, presumably summer and winter. The ECU setting was on '2nd' rather than main. I changed this and the warning lamp extinguished.
A visit back to Costco confirmed that they had programmed the two new sensors to the ECU so it seems all is well.
Shame that the Costco chap missed this minor point after all his hard work of fitting the sensors.
lexo98 - the sensors are EZ SENSE T2200 model. These operate at 433 Mhz. I have not encountered that actual wheel positions are indicated.
Well, it seems with a curious mix of luck to judgement I have this sorted without a visit to a dealership.
The TPMS system hold data for two sets of tires, presumably summer and winter. The ECU setting was on '2nd' rather than main. I changed this and the warning lamp extinguished.
A visit back to Costco confirmed that they had programmed the two new sensors to the ECU so it seems all is well.
Shame that the Costco chap missed this minor point after all his hard work of fitting the sensors.
lexo98 - the sensors are EZ SENSE T2200 model. These operate at 433 Mhz. I have not encountered that actual wheel positions are indicated.
I don't think the TPMS system was ever meant to give precise tire pressure information. It does do a good job giving a warning when the pressure in one or more tires is getting low. Not a bad deal.
TPMS giving false indication
