Why does the tire pressure warning light come on after changing tires?
2 Answers
Since the vehicle's computer still defaults to the pre-tire change state after replacement, the warning light will activate. After changing tires, the tire pressure monitoring system must also be reset. Methods to eliminate the tire pressure warning light: 1. After the tire pressure indicator lights up, ensure the vehicle is parked safely by the roadside and check if the abnormal tire pressure detection function on the car's navigation screen is working properly. 2. Once it's confirmed that there is an issue with the tire, check whether the tire pressure is normal. 3. After resetting the tire pressure to the normal standard, start the car and drive for a while.
The tire pressure warning after getting new tires installed has been quite a headache for me, and I've dealt with similar situations several times. The main reasons are usually sensor installation or setup issues: after new tires are mounted, the position sensors might not be properly secured, or the signal hasn't updated in the system; another common factor is inconsistent tire pressure itself, such as new tires having higher or lower factory pressure than standard, but the car's system remembers the previous reference value, triggering false alarms; it also depends on the car's design—some high-end models have automatic detection, while regular cars require manual reset. First, check the tire manual to confirm the recommended pressure range (usually 2.3-2.5 bar), use a tire pressure gauge to measure the actual pressure, and adjust accordingly. If the warning persists after proper adjustment, don't hesitate—visit a professional repair shop to have a technician calibrate it with diagnostic tools. Safety comes first. Unstable tire pressure affects driving stability and may lead to increased fuel consumption or blowout risks. I recommend developing a habit of checking and resetting after every new tire installation—a few simple steps can save a lot of hassle.
