What Causes the Tire Pressure Light to Illuminate in a Sagitar?
2 Answers
Here are the specific reasons why the tire pressure light illuminates in a Sagitar: 1. Punctured tire: You can use a tire pressure gauge to measure. The normal values are 2.3 for the front tires and 2.5 for the rear tires. If there is insufficient air, refill the tires and then observe the tire pressure warning light. 2. Excessive tire pressure: The standard tire pressure is 2.4-2.5bar; reinforced tires require 2.8-2.9bar; the maximum pressure should not exceed 3.5bar. Therefore, when any tire exceeds 3.0bar, it will trigger the tire pressure monitoring light. 3. Low tire pressure due to prolonged lack of inflation: When the pressure drops below 1.8bar, it will cause the tire pressure monitoring light to illuminate. Regular checks should be performed to ensure the tire pressure detector is functioning properly. If the tire pressure monitor does not alert you promptly when issues arise, it indicates a problem with the tire pressure monitor.
I've repaired many cars with tire pressure warnings, and the Volkswagen Sagitar mainly has three causes for this issue. The most common is abnormal tire pressure, such as a slow leak from a nail puncture or the tire pressure automatically dropping by more than 25% in cold weather. Another reason is the wheel speed sensor being covered in mud, causing the car to misinterpret inconsistent tire rotation speeds. Additionally, if the tire pressure isn't reset after a repair, the system may still trigger an alarm based on old data. Just the other day, I helped a neighbor with a car where all four tire pressures were normal, and it turned out to be a deformed wheel hub causing abnormal tire temperature and triggering the warning. I recommend first using a reliable tire pressure gauge to measure the pressure in all four tires, maintaining 2.3-2.5 bar when the car is cold. If the light stays on, it's best to visit a repair shop to read the fault codes.
