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I just adjusted the tire pressure since the dealer had them at 37 psi and went to this thread and my owners manual to try to reset the TPMS. No luck finding the reset switch. Based on the directions given in this thread I'm assuming it is not visible when you look under the area near the steering wheel.
I just adjusted the tire pressure since the dealer had them at 37 psi and went to this thread and my owners manual to try to reset the TPMS. No luck finding the reset switch. Based on the directions given in this thread I'm assuming it is not visible when you look under the area near the steering wheel.
It's easier to search the online owners manuals that try to find information in the hard copy manuals. You can also download the online manual to your PC which might make it easier to search.
It's easier to search the online owners manuals that try to find information in the hard copy manuals. You can also download the online manual to your PC which might make it easier to search.
Thanks Kansas. That is the page of the owner's manual I was looking at and for the life of me I could not locate the switch. Is it somewhere under the dash so you can not actually see the switch but have to just feel for it. I appreciate the link to the owners manual.
Thanks Kansas. That is the page of the owner's manual I was looking at and for the life of me I could not locate the switch. Is it somewhere under the dash so you can not actually see the switch but have to just feel for it. I appreciate the link to the owners manual.
Thanks so much Kansas. I found the switch and reset the TPMS. The location of that switch has to be one of most stupid design features I've come across so far with the RX350. In my other vehicle I can just reset my TPMS via my on board computer display. The YouTube video was also a little concerning when the guy measured his tire pressure and they were down to 24 psi and he said he never received any kind of warning from the TPMS. Thanks again.
The location of that switch has to be one of most stupid design features I've come across so far with the RX350.
It should be easy to find now that you know where it is. I can understand putting a switch that isn't used very often in an out of the way location.
Originally Posted by auntrout
The YouTube video was also a little concerning when the guy measured his tire pressure and they were down to 24 psi and he said he never received any kind of warning from the TPMS.
The tire pressures at which the low pressure warning light in the instrument cluster illuminates are defined in a vehicle ECU at the factory. IMO, car makers often set the minimum pressures in the ECU's too low. I don't know what the minimum ECU tire pressure for the gen 3 RX is but I know that it is only 26 psi for one vehicle we have that has a recommended tire pressure of 35 psi.
The guy in that video sure is clueless if he set his tire pressures to 32 psi and didn't check them again until an entire year later when he found the pressures ranged from 25 to 27 PSI.
Tire pressures rise and fall about 1 psi for each 10 degrees of ambient temperature change. So, if one sets their tire pressures to 32 psi on a summer day when it is 90 degrees Fahrenheit, the pressures will be at about 25 psi on a Winter day when it is 20 degrees Fahrenheit assuming there has not been any air leakage that would cause tire pressures to be even lower.
Tire pressures should be checked at least monthly if ambient temperatures are consistent - more often if ambient temperatures are fluctuating. For where I live (eastern Kansas), I assume an average Winter temperature of 20 degrees Fahrenheit when setting tire pressures. If it is 50 degrees in my garage when I set the pressures "cold" and it is 20 degrees outside, I set all the tire pressures to at least 3 psi above the pressures stated on the door jams. When the temperature fell to below zero a couple of weeks ago, I added three more psi to all the tires to compensate. I use a small portable AC/DC air compressor to adjust tire pressures.
As Spring approaches and ambient temperatures increase, I may bleed some air out of the tires but probably not much since all our vehicles are on Winter tires on extra wheels. I'll be putting the summer wheels/tires on our vehicles in four to six weeks depending on weather forecast. At that time, I will reprogram the vehicle ECU's with the TLMS codes for the summer wheels using an ATEQ Quickset programming tool.
OK, maybe I'm a little obsessive about tire pressures but correct pressures are important for vehicle safety and making tires last as long as possible.
It should be easy to find now that you know where it is. I can understand putting a switch that isn't used very often in an out of the way location.
The tire pressures at which the low pressure warning light in the instrument cluster illuminates are defined in a vehicle ECU at the factory. IMO, car makers often set the minimum pressures in the ECU's too low. I don't know what the minimum ECU tire pressure for the gen 3 RX is but I know that it is only 26 psi for one vehicle we have that has a recommended tire pressure of 35 psi.
The guy in that video sure is clueless if he set his tire pressures to 32 psi and didn't check them again until an entire year later when he found the pressures ranged from 25 to 27 PSI.
Tire pressures rise and fall about 1 psi for each 10 degrees of ambient temperature change. So, if one sets their tire pressures to 32 psi on a summer day when it is 90 degrees Fahrenheit, the pressures will be at about 25 psi on a Winter day when it is 20 degrees Fahrenheit assuming there has not been any air leakage that would cause tire pressures to be even lower.
Tire pressures should be checked at least monthly if ambient temperatures are consistent - more often if ambient temperatures are fluctuating. For where I live (eastern Kansas), I assume an average Winter temperature of 20 degrees Fahrenheit when setting tire pressures. If it is 50 degrees in my garage when I set the pressures "cold" and it is 20 degrees outside, I set all the tire pressures to at least 3 psi above the pressures stated on the door jams. When the temperature fell to below zero a couple of weeks ago, I added three more psi to all the tires to compensate. I use a small portable AC/DC air compressor to adjust tire pressures.
As Spring approaches and ambient temperatures increase, I may bleed some air out of the tires but probably not much since all our vehicles are on Winter tires on extra wheels. I'll be putting the summer wheels/tires on our vehicles in four to six weeks depending on weather forecast. At that time, I will reprogram the vehicle ECU's with the TLMS codes for the summer wheels using an ATEQ Quickset programming tool.
OK, maybe I'm a little obsessive about tire pressures but correct pressures are important for vehicle safety and making tires last as long as possible.
I agree, I thought it was a little funny when the guy said he hadn't checked his tire in a year. Out of curiosity, do you use a dial pressure gauge? I'm looking for one that is more accurate than the one I currently use. Do you have a gauge you'd recommend?
I'm looking for one that is more accurate than the one I currently use. Do you have a gauge you'd recommend?
The tire gauge I use most is digital and came with an air compressor model that is no longer made. I've got a variety of digital, dial and the old "stick" type gauges.
If I was buying a tire gauge today, I'd probably just look for a highly rated one on Amazon or maybe buy the Dill digital gauge from Tire Rack simply because I've been happy with other products from Dill Air Control: https://www.tirerack.com/accessories...ILL5900&ID=284
The tire gauge I use most is digital and came with an air compressor model that is no longer made. I've got a variety of digital, dial and the old "stick" type gauges.
If I was buying a tire gauge today, I'd probably just look for a highly rated one on Amazon or maybe buy the Dill digital gauge from Tire Rack simply because I've been happy with other products from Dill Air Control: https://www.tirerack.com/accessories...ILL5900&ID=284
The cruise control will not work when tpms light is on.
Originally Posted by FastFord
I don't know how to turn them off, but during the winter months when the other rims/tires are on the car, I use electrical tape to hide the light. I'm not bypassing anything or disabling the system. I even checked with my insurance company because I get a discount for winter tires and they said if I don't want TPMS, I don't have to have them as far as they are concerned. I do however check the pressure often during the winter months. Trac control and all other functions work whether TPMS is getting a reading or not.
I’m a recent new owner of a 2010 RX450h (oct2009 build date), been learning a lot on these threads but now I have a stumper for everyone.
I do have TPMS that is working but can’t seem to find any way to calibrate or reset the system.
according to the manual I should have Tire Pressure Warning reset switch. I can’t see It?
12-15-14, 03:08 PM
