I am driving a rental car during my holidays this week. Yesterday, the warning light on the dashboard came on to tell me that I had low tire pressure. Sure enough, when we checked, the front right tire was low. We immediately stopped at a service station and put air in all the tires. Still the light remained lit. So this morning we went to a tire service centre and had tem check the tires again. This time we removed the front right tire and resealed it. The attendant then filled the tire, checked the pressure on the other tires and sent us on our way. Guess what? The warning light is still on. After checking the car manufacturer's website, I discovered that if the sensor doesn't reset itself, the only option is to take it to a dealer who has the special tool necessary to recalibrate the sensor. Now most of us in life blow through the warning lights that come our way with way too little thought. But what do you do with a warni...