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What Causes the Tire Pressure Warning Light in the Buick Regal?

1 Answers

AlejandroRose

07/30/25 8:19am

The tire pressure warning light in the Buick Regal typically indicates one of four situations: 1. **Puncture-induced tire pressure warning light activation** This scenario usually involves a very slow leak, making it difficult to immediately identify the affected tire. In such cases, use a tire pressure gauge to measure the pressure (2.3 bar for front tires and 2.5 bar for rear tires). If the pressure is low, inflate the tire accordingly and monitor the warning light. If the light reappears after a few days, the tire may need to be removed for inspection. At a 4S shop, technicians often adjust the front tire pressure to 2.3 bar and the rear tire pressure to 2.4 bar, then reset the tire pressure warning system. They may advise driving for 3-4 days to observe if the warning reappears. If it does, a puncture is likely, and another visit to the 4S shop for further inspection is necessary. 2. **Tire pressure warning light due to overinflation** According to the international GBT2978-2008 standard, passenger car tire inflation pressure should meet the following requirements: - Standard tires: 2.4-2.5 bar - Reinforced tires: 2.8-2.9 bar - Maximum pressure: Should not exceed 3.5 bar Thus, if any tire exceeds 3.0 bar, the tire pressure warning light may activate. 3. **Tire pressure warning light due to prolonged driving with low tire pressure** This situation typically occurs when a tire's pressure is too low, causing the tire temperature to rise during high-speed driving, which in turn increases the tire pressure. In such cases, it is advisable to stop and rest or replace the tire with a spare. 4. **Tire pressure warning light due to prolonged underinflation** When the tire pressure drops below 1.8 bar, the warning light may activate. Regular checks are recommended to ensure the tire pressure monitoring system (TPMS) is functioning correctly. If the TPMS fails to alert you to a problem, it may indicate a malfunction. Additionally, if the ignition is turned to ON/START and the TPMS indicator light stays on for 2 seconds before turning off, it could mean the vehicle's original receiver was not properly paired or a replacement receiver was not bound correctly. In such cases, visit a 4S shop for professional assistance. Technicians can use a handheld learning tool to retrieve all tire sensor IDs and rebind the receiver controller.

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