R55 Flat tire indicator light won't go out
Joined: Jul 2021
Posts: 2,526
Likes: 1,588
From: Anywhere but here
Flat tire indicator light won't go out
I've had this happen before - along time ago but I cant remember how I solved it.
I don't ride on runfllats and haven't for 18 years.
The other day whilst driving, the flat tire warning indicator light on the speedometer began to flash.
In the absence of rational thinking, for what ever possessed me to do so, still driving, I pressed and held down the flat tire reset button on the E-brake console. A STUPID MISTAKE.
Of course in doing so caused the warning light to stop flashing an stayed solid lit. I stopped, pulled over, checked the tire pressure on all corners to discover the left front to be 7psi low.
Inflated all tires to 32psi , Held down the flat tire reset button and went on my way. Its been 100 mi since then and the warning light remains solidly lit and won't go out no matter what.
OBDII scan indicates a runflat tire fault and to consult owners manual. Cleared the code but it still didn't extinguish the light.
I ran a live data wheel sensor test scan with my Foxwell Elite - which showed no issue pointing to a bad wheel speed sensor.
Am I missing something here?
Any ideas on how to extinguish this stupid flat tire warning light would be greatly appreciated.
*I think the first time I had this happen (made this same mistake), years ago; I think I sort of remember having to disconnect the wires from the little DSC box under the E-brake console momentarily to cause this warning light on the speedo to finally go out.
Hoping you guys might have an easier solution for me.
TIA
I don't ride on runfllats and haven't for 18 years.
The other day whilst driving, the flat tire warning indicator light on the speedometer began to flash.
In the absence of rational thinking, for what ever possessed me to do so, still driving, I pressed and held down the flat tire reset button on the E-brake console. A STUPID MISTAKE.
Of course in doing so caused the warning light to stop flashing an stayed solid lit. I stopped, pulled over, checked the tire pressure on all corners to discover the left front to be 7psi low.
Inflated all tires to 32psi , Held down the flat tire reset button and went on my way. Its been 100 mi since then and the warning light remains solidly lit and won't go out no matter what.
OBDII scan indicates a runflat tire fault and to consult owners manual. Cleared the code but it still didn't extinguish the light.
I ran a live data wheel sensor test scan with my Foxwell Elite - which showed no issue pointing to a bad wheel speed sensor.
Am I missing something here?
Any ideas on how to extinguish this stupid flat tire warning light would be greatly appreciated.
*I think the first time I had this happen (made this same mistake), years ago; I think I sort of remember having to disconnect the wires from the little DSC box under the E-brake console momentarily to cause this warning light on the speedo to finally go out.
Hoping you guys might have an easier solution for me.
TIA
Alliance Member
Joined: Jul 2016
Posts: 7,515
Likes: 2,485
From: WNY
Does your car use the wheel pressure sensors, or does it use the calculation method based on wheel speed? Isn’t the procedure to fill the tires to pressure, hit the rest while stopped, then drive off?
Joined: Jul 2021
Posts: 2,526
Likes: 1,588
From: Anywhere but here
**solved**
The flat tire re-set button on the E-brake console was stuck!
I merely had to remove the E-brake boot, pop out the button casing, disassemble, clean out all the dirt particles from the "Land of Entrapment" (= NM), with a alcohol/cotton swab and reassemble.
The button now operates smoothly like new. Best of all the light on the dash went out as soon as I plugged it back in.
Simply stoopid simple fix.
Thanks!
I merely had to remove the E-brake boot, pop out the button casing, disassemble, clean out all the dirt particles from the "Land of Entrapment" (= NM), with a alcohol/cotton swab and reassemble.
The button now operates smoothly like new. Best of all the light on the dash went out as soon as I plugged it back in.
Simply stoopid simple fix.
Thanks!
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mdbsat
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Jul 16, 2011 11:36 AM