SL/R230: Low tire pressure warning
Unfortunately the batteries are not replaceable.
You can buy new TPMS transmitters from Tirerack for something like $75-$80 each. Used TPMS transmitters aren't worth buying because they only last 5 years +/-.
If you don't buy replacement transmitters your other options are to live with the warning message or turn off the TPMS receiver via Star Diagnostics.
$100 is a bit pricey given how simple the Star adjustment really is, but that's not unusual for a dealer. Some dealers won't even make the adjustment because TPMS is considered safety equipment.
You might want to try Discount Tire. They may be able to get the sensors and install them. The problem then would be programming the receiver to identify them.
Good luck and please let us know what you end up doing and the costs.
Thanks,



