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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 10-29-2012, 10:16 AM   #1
///mteknikk
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red tpms light

i have an 02 e46 m3 that came with the 19 oem wheels. i have the 18 smaller oem wheels on winter tires that came when i bought the car. the red tpms light is on and i know there isnt tpms sensors on e46 m3s. just ran off the abs wss sensors on the wheels. i tried doing the key on position 2 hold the tpms button down and the light resets and dissapears for the drive, but as soon as i turn off and on again it reappears. any ideas? thanks
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Old 10-29-2012, 03:05 PM   #2
DSilk56
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Have you checked both the tire pressures and the tire wear side to side? There is no TPS monitoring on our cars; what we have utilizes the ABS sensors to measure comparative wheel rotations. If a tire on one side of the vehicle has lower tire pressure than its counterpart, or has greater tread wear that is sufficient to cause rotation speed differences, the light will illuminate.
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Old 10-29-2012, 03:08 PM   #3
///mteknikk
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yeah but the yellow light would illuminate no? or can that cause the red one as well?
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Old 10-29-2012, 03:17 PM   #4
DSilk56
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The red one usually goes on when the differential is severe enough to indicate a flat tire.
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Old 10-29-2012, 03:22 PM   #5
///mteknikk
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oh really? time to check my pressures then, thanks
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Old 10-29-2012, 03:24 PM   #6
scca_ziptie
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Quote:
Originally Posted by DSilk56 View Post
Have you checked both the tire pressures and the tire wear side to side? There is no TPS monitoring on our cars; what we have utilizes the ABS sensors to measure comparative wheel rotations. If a tire on one side of the vehicle has lower tire pressure than its counterpart, or has greater tread wear that is sufficient to cause rotation speed differences, the light will illuminate.
My 2006 comp pkg car has a functional TPMS....? I ran over a nail and it caused a tear in the tire that deflated almost instantly which resulted in a red tire pressure warning light on the instrument cluster.. Pretty sure in the owner's manual it states something to the effect of massive pressure loss and to pull over as safely and as soon as possible.


Regardless - when I would reset the TPMS I would start the car, press and hold the TPMS button for 5-10 seconds until the light stayed on yellow and then drove the car. It would clear itself after approx 20 seconds and wouldn't come back on until I switched wheels again.
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Old 10-29-2012, 05:30 PM   #7
Slyde
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After you confirm good pressure in all tires, drive and hold the TPMS button until the light goes on, then after some seconds the light then goes off. I believe this is the reset action for the system,
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Old 10-29-2012, 06:03 PM   #8
MachRc
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next time you see the light. Reset it by holding 2-3 seconds.

now once its gone, pres it again and hold 2-3 seconds to CALIBRATE IT.

it will not come back on now.
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Old 10-29-2012, 07:32 PM   #9
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Yup just hold the button till the light goes off, then press it again until it turns yellow then drive off, it'll turn off when it's all set.
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Old 12-09-2016, 06:27 PM   #10
Proamsynthetics
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I know that is an old thread but FINALLY the light cleared! Thank you
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Old 04-25-2017, 07:18 PM   #11
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Thank you as well!!
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