08-25-2019, 05:32 PM #1
Does the TPMS sensors have replaceable batteries?
I was at Discount Tires and they are telling me that if the batteries on my Smart Car TPMS are dead then I would have to replace with brand new sensors. Of course they were going to charge $240 to replace all 4. Is there a way to just replace the TPMS batteries? If not I would probably buy some aftermarket external TPMS sensor system but if I do that is there a way to disable the TPMS display on the panel?
08-27-2019, 11:13 PM #2
Is this the 453 that you have, as the 451 never came with tyre pressure monitoring? (In the UK definitely, not sure about the USA/Canada)
Some car systems tell you which wheel has low pressure, but the Smart system only tells you that at least one tyre is at low pressure, so its difficult to tell which tyre specifically, unless you get a pressure gauge on it .
On the 453 there is a sensor mounted at the back of the tyre valve inside the wheel, the tyre has to come off, and new battery has to be installed, and tyre put back on.
Usually only one tyre sensor battery goes at one time after a number of years, so many tyre companies now have a gadget to check a signal output from each tyre, and tell which tyre is not signalling, and replace the battery in that tyre. They also synch the signal to the TPMS system.
You do not have to change a tyre sensor unless it has been damaged, either in a crash or bad damage to a punctured wheel and hence it no longer gives a signal output.
Last edited by Col Bolla; 08-27-2019 at 11:17 PM.
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