TPMS sensor replacement help

Larryatl · 08-28-2025, 05:13 PM

My 2018 m40i had one TPMS go out last December, I had Costco change it and the new one worked fine. I was having new tires installed this week and had the remaining 3 replaced, my car reader said they were all low battery so I figured I would get ahead of the curve. Costco looked up the part they used last time and replaced 3 more. The car will not get past 34% on the TPMS reset. Any suggestions?

Wgosma · 08-28-2025, 05:52 PM

I believe sometimes one has to drive a bit before the sensors sync and system reset occurs- perhaps try that for a couple days or more and see.

Highline-Autos.com · 08-28-2025, 06:22 PM

TPMS are always a little strange, but I'd put on some miles and get it some time. Costco has a great warranty/return policy, so I'd just see what happens.

Trenton O. Gibson
tgibson@highline-autos.com
Highline Autos
Direct: 602.909.9216
Office: 480.348.0777

bje3524 · 09-25-2025, 07:34 PM

Hello, can you please post what resolved your tire pressure sensor issue? I’m planning to have Costco replace mine soon too. Thank you

Fredo · 09-25-2025, 07:38 PM

Do you know which brand was installed by Costco? Check my thread about Discount Tire, they use the Schraeder brand.

https://x3.xbimmers.com/forums/showthread.php?t=2023694

TJay74 · 09-26-2025, 07:20 AM

Reset the TPMS in the iDrive, then go for a long drive that includes getting on the highway and up to highway speeds.

bokmeipai · 09-26-2025, 09:42 AM

After repeated resets and if it still gets stuck at 50% or less then it most likely is a defective sensor. I had 4 brand new OEM BMW sensors installed, had this problem and took to BMW service and was diagnosed with 2 defective sensors.

STL Swanny · 09-26-2025, 02:52 PM

It's possible one of the sensors is bad out of the box or got damaged during tire install.

I have seen both.

unless you have access to a code reader that can read the modules in the car to check for TPMS faults or a TPMS scan tool, you should probably take it back to Costco To let them know about the issue.

08-28-2025, 05:13 PM	#1
Larryatl Private First Class 84 Rep 123 Posts Drives: G01 m40i Join Date: Nov 2017 Location: ATLANTA iTrader: (0)	TPMS sensor replacement help My 2018 m40i had one TPMS go out last December, I had Costco change it and the new one worked fine. I was having new tires installed this week and had the remaining 3 replaced, my car reader said they were all low battery so I figured I would get ahead of the curve. Costco looked up the part they used last time and replaced 3 more. The car will not get past 34% on the TPMS reset. Any suggestions?
	Appreciate 0 Tweet Quote

08-28-2025, 05:52 PM	#2
Wgosma Colonel 1073 Rep 2,184 Posts Drives: 2019 G01 X3 30i (B48) Join Date: Sep 2018 Location: Northern Nevada iTrader: (0)	I believe sometimes one has to drive a bit before the sensors sync and system reset occurs- perhaps try that for a couple days or more and see. Last edited by Wgosma; 08-28-2025 at 05:54 PM..
	Appreciate 0 Quote

08-28-2025, 06:22 PM	#3
Highline-Autos.com BimmerPost Supporting Vendor 565 Rep 781 Posts Drives: '15 BMW i8 Join Date: May 2024 Location: Scottsdale, AZ iTrader: (0)	TPMS are always a little strange, but I'd put on some miles and get it some time. Costco has a great warranty/return policy, so I'd just see what happens. Trenton O. Gibson tgibson@highline-autos.com Highline Autos Direct: 602.909.9216 Office: 480.348.0777 __________________ Your place for distinguished automobiles, proud provider of GWC/Easy Care & Freedom Warranty extended warranties. Visit us at www.highline-autos.com Official RECARO Automotive Retailer: www.highline-autos.com/product-category/recaro/ Highline Autos Magazine: Volume XXII, Number 05 https://isu.pub/dXwCIV1
	Appreciate 0 Quote

09-25-2025, 07:34 PM	#4
bje3524 Registered 17 Rep 24 Posts Drives: 2018 X5 F15 Join Date: Jan 2024 Location: Minnesota iTrader: (0)	Hello, can you please post what resolved your tire pressure sensor issue? I’m planning to have Costco replace mine soon too. Thank you
	Appreciate 0 Quote

09-25-2025, 07:38 PM	#5
Fredo Major 719 Rep 1,013 Posts Drives: 11 X3, 12 335i, 20 X3 Join Date: Mar 2011 Location: Austin TX iTrader: (3)	Do you know which brand was installed by Costco? Check my thread about Discount Tire, they use the Schraeder brand. https://x3.xbimmers.com/forums/showthread.php?t=2023694
	Appreciate 0 Quote

09-26-2025, 07:20 AM	#6
TJay74 Captain 635 Rep 847 Posts Drives: 20 X3M & 24 M4xC & 25 M340i Join Date: Jan 2022 Location: Norman OK iTrader: (0) Garage List 2019 Audi S4 [0.00] 2020 BMW X3M [0.00] 2024 BMW M4xC [0.00]	Reset the TPMS in the iDrive, then go for a long drive that includes getting on the highway and up to highway speeds.
	Appreciate 0 Quote

09-26-2025, 09:42 AM	#7
bokmeipai Private 16 Rep 55 Posts Drives: 2021 M340Xi Join Date: Sep 2008 Location: new york iTrader: (0)	After repeated resets and if it still gets stuck at 50% or less then it most likely is a defective sensor. I had 4 brand new OEM BMW sensors installed, had this problem and took to BMW service and was diagnosed with 2 defective sensors.
	Appreciate 0 Quote

09-26-2025, 02:52 PM	#8
STL Swanny Independent Technician 213 Rep 146 Posts Drives: 2018 BMW X3 M40i Join Date: Jun 2025 Location: St. Louis, MO iTrader: (0)	It's possible one of the sensors is bad out of the box or got damaged during tire install. I have seen both. unless you have access to a code reader that can read the modules in the car to check for TPMS faults or a TPMS scan tool, you should probably take it back to Costco To let them know about the issue.
	Appreciate 0 Quote