SC 430 Tire Pressure Light Reset
04-21-06, 10:30 PM
#17
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Same thing is happening to me now. The light comes on intermittently, on some days and not on other days. It's a lot warmer in Boston now, so I don't think it has anything to do with the temperature. PSI is 34-35 all around.
Would it be bad to fill them all up to 41psi? I have Michelin Pilot Sport A/Ss, and I think the recommended psi is 32.
Would it be bad to fill them all up to 41psi? I have Michelin Pilot Sport A/Ss, and I think the recommended psi is 32.
04-22-06, 11:49 AM
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Tire pressure remains same, but light stays on
Originally Posted by amymarcia
New tires (runflats) were put on the car two months ago. The dash light indicating low pressure
appeared and more air was put in. However, the light continues to stay on and the manual states a new tire should be put on. Seems the tire is fine. Is there any way to reset the indicator light? Thanks for any suggestions.
appeared and more air was put in. However, the light continues to stay on and the manual states a new tire should be put on. Seems the tire is fine. Is there any way to reset the indicator light? Thanks for any suggestions.
04-22-06, 01:05 PM
#19
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The manual says to put on a new tire because it presumes a runflat, and low pressure means the tire is damaged. For the most part, runflats cannot be repaired.
It's OK to leave the light on, but then you won't know if you have a real low pressure situation.
I would suggest pumping the tires up to at least 40, (where I kept mine all the time when I had runflats), or even higher. After a while the light should go out. If it's still on after a week of driving with 40 or 50 psi, then you have a problem in the system.
My guess is that the dealer will first try to reset the light with the magic computer box. Sometimes warning lights come on and won't go off even when they are supposed to. (Try leaving your gas cap loose and see what happens.) If the reset by the computer does not work, then you probably have a bad sensor. Since you have new runflats, you want the sensors working correctly, because that's the only way to tell if you have a flat.
Once the light is fixed, try 40 or so. 40 gives a better ride and and is far enough away from the trigger point that you don't get false alarms from normal pressure variations.
It's OK to leave the light on, but then you won't know if you have a real low pressure situation.
I would suggest pumping the tires up to at least 40, (where I kept mine all the time when I had runflats), or even higher. After a while the light should go out. If it's still on after a week of driving with 40 or 50 psi, then you have a problem in the system.
My guess is that the dealer will first try to reset the light with the magic computer box. Sometimes warning lights come on and won't go off even when they are supposed to. (Try leaving your gas cap loose and see what happens.) If the reset by the computer does not work, then you probably have a bad sensor. Since you have new runflats, you want the sensors working correctly, because that's the only way to tell if you have a flat.
Once the light is fixed, try 40 or so. 40 gives a better ride and and is far enough away from the trigger point that you don't get false alarms from normal pressure variations.
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