TPMS says tires are low, what gives?

LM E90 · 04-25-2009, 11:44 AM

Hi everyone, please don't flame me telling me to search the forum because i've searched for the past 20 minutes with no luck. I got two new tires yesterday because rear tires were completely bald. When I got the car back, everything was fine and the tpms light was off. After the car sat for a few hours in my friends driveway, i get in and turn on the car and the TPMS light turns on. I check the psi in all four of the tires and it is high enough that the light should not turn on. I try to reset the tpms through the stalking feature and it keeps telling me that my tire is low! when in reality all of my tires psi is fine. What gives? How can I reset the tpms? Do i have to make a dreaded trip to the stealership? Could town fair tire have ruined the tpms? What do you guys suggest?

Arustik1 · 04-25-2009, 11:48 AM

IDK man couldn't tell you...I had the same problem with my PS2s on 189s. I just put my autox setup on and the light went away.

Look --> http://www.e90post.com/forums/showthread.php?t=253047

SV Concepts · 04-27-2009, 02:40 AM

Might be faulty TPMS sensors but most likely try resetting them and see what happens (Info under your iDrive)

Vudoo4u2 · 04-27-2009, 04:31 AM

has the weather just changed by ~40F? overnight perhaps?

its a known issue with the tpms sensors that when you experience a large change in temp, you should just check the pressure, and reset your tpms

until the temps stabilize a bit, those huge swings send the tpms into panic

but theyre working just fine

Nikolas · 04-27-2009, 10:02 AM

Quote:

Originally Posted by Vudoo4u2

has the weather just changed by ~40F? overnight perhaps?

its a known issue with the tpms sensors that when you experience a large change in temp, you should just check the pressure, and reset your tpms

until the temps stabilize a bit, those huge swings send the tpms into panic

but theyre working just fine

I've heard this also, but I have yet to experience it. I get 30 degree temp swings everyday.

Vudoo4u2 · 04-27-2009, 01:15 PM

Quote:

Originally Posted by Nikolas

I've heard this also, but I have yet to experience it. I get 30 degree temp swings everyday.

I get it seasonally. I'm pretty sure its also to do with what version of the ecu software you have. I read that there was a tsb on this where they just upgraded your software...

kyleb350 · 04-27-2009, 01:43 PM

The general rule for PSI changing with temperature is 1 psi per 10 degrees, right? So you'd see a 4 psi change max, and I think the sensors go off when it's +/- 8psi... if I remember correctly. I remember back when we had those -10 or -20 degree days mine would go off

nomile · 04-27-2009, 01:45 PM

A lot of people enter the 'reset tpms' menu item, but don't actually reset it. You have to hold the button for 5(or 10) seconds, as your manual states... It took me a non-resetting system to whip out the ol' manual, but then it worked.

McLuVan · 04-27-2009, 01:52 PM

resettttttt

answerman · 04-28-2009, 06:32 PM

It's possible that one of the sensors was damaged when the tires were replaced. It's too bad that BMW hasn't installed a TPM system that tells you WHICH tire is low. The General manages to install that kind of system on some of his cars

04-25-2009, 11:44 AM	#1
LM E90 Private 6 Rep 67 Posts Drives: 2008 328xi Join Date: Jun 2008 Location: Hamden, CT iTrader: (0)	TPMS says tires are low, what gives? Hi everyone, please don't flame me telling me to search the forum because i've searched for the past 20 minutes with no luck. I got two new tires yesterday because rear tires were completely bald. When I got the car back, everything was fine and the tpms light was off. After the car sat for a few hours in my friends driveway, i get in and turn on the car and the TPMS light turns on. I check the psi in all four of the tires and it is high enough that the light should not turn on. I try to reset the tpms through the stalking feature and it keeps telling me that my tire is low! when in reality all of my tires psi is fine. What gives? How can I reset the tpms? Do i have to make a dreaded trip to the stealership? Could town fair tire have ruined the tpms? What do you guys suggest?
	Appreciate 0 Tweet Quote

04-25-2009, 11:48 AM	#2
Arustik1 HYEPWR 100 Rep 2,868 Posts Drives: E46 M3 Join Date: Oct 2007 Location: Mesa, AZ iTrader: (3) Garage List 2007 E92 335i [0.00]	IDK man couldn't tell you...I had the same problem with my PS2s on 189s. I just put my autox setup on and the light went away. Look --> http://www.e90post.com/forums/showthread.php?t=253047 __________________ 2002 330ci Titanium Silver / Gray 2005 X5 3.0i Black Sapphire Metallic / Black 2002 M3 Laguna Seca Blue / Black 2001 M5 Jet Black / Black
	Appreciate 0 Quote

04-27-2009, 02:40 AM	#3
SV Concepts 361 Rep 5,859 Posts Drives: Vorsteiner E60 M5 Join Date: Mar 2006 Location: 1460 White Oaks Rd. Suite F. Campbell, CA 95008 iTrader: (10)	Might be faulty TPMS sensors but most likely try resetting them and see what happens (Info under your iDrive)
	Appreciate 0 Quote

04-27-2009, 04:31 AM	#4
Vudoo4u2 Night Sh1ft 458 Rep 3,079 Posts Drives: F95 X5MC LCI Join Date: Oct 2007 Location: It's bobsled time iTrader: (3) Garage List 2024 BMW X5M Compet ... [0.00]	has the weather just changed by ~40F? overnight perhaps? its a known issue with the tpms sensors that when you experience a large change in temp, you should just check the pressure, and reset your tpms until the temps stabilize a bit, those huge swings send the tpms into panic but theyre working just fine __________________ "Your first 10,000 photographs are your worst.” ― Henri Cartier-Bresson
	Appreciate 0 Quote

04-27-2009, 01:43 PM	#7
kyleb350 Brigadier General 424 Rep 4,709 Posts Drives: '21 X3MC Join Date: Jun 2008 Location: Milwaukee iTrader: (6)	The general rule for PSI changing with temperature is 1 psi per 10 degrees, right? So you'd see a 4 psi change max, and I think the sensors go off when it's +/- 8psi... if I remember correctly. I remember back when we had those -10 or -20 degree days mine would go off
	Appreciate 0 Quote

04-27-2009, 01:45 PM	#8
nomile Second Lieutenant 10 Rep 261 Posts Drives: 328xi; 318ti Join Date: Oct 2008 Location: Lyons, CO iTrader: (0)	A lot of people enter the 'reset tpms' menu item, but don't actually reset it. You have to hold the button for 5(or 10) seconds, as your manual states... It took me a non-resetting system to whip out the ol' manual, but then it worked.
	Appreciate 0 Quote

04-27-2009, 01:52 PM	#9
McLuVan Lieutenant General 304 Rep 13,114 Posts Drives: ///M3 Join Date: Jan 2008 Location: Socal~818~ iTrader: (1)	resettttttt __________________
	Appreciate 0 Quote

04-28-2009, 06:32 PM	#10
answerman New Member 0 Rep 22 Posts Drives: 2009 328iX wagon Join Date: Mar 2009 Location: long Island iTrader: (0)	Damaged? It's possible that one of the sensors was damaged when the tires were replaced. It's too bad that BMW hasn't installed a TPM system that tells you WHICH tire is low. The General manages to install that kind of system on some of his cars
	Appreciate 0 Quote