TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC
Start a Discussionhttps://teslamotorsclub.com/tmc/tags/

Tire pressure monitoring system needs service

Discussion in 'Model S: User Interface' started by rpavlicek, Oct 3, 2016.

  1. rpavlicek

    rpavlicek ***** Neophyte

    Joined:
    Feb 7, 2013
    Messages:
    75
    Location:
    Santa Clara, CA
    "Tire pressure monitoring system needs service"
    (not to be confused with low tire pressure warnings)

    I see this warning go on and off for the last month or so.

    I'm just curious if anyone else has had it ...and what was the resolution (assuming they took it a SC).

    Thanks!
     
  2. FredTMC

    FredTMC Model S VIN #4925

    Joined:
    Dec 26, 2012
    Messages:
    3,462
    Location:
    Orange County CA
    I have same warning for last month or so. I haven't ran it in for service yet but I will
     
  3. Lloyd

    Lloyd Well-Known Member

    Joined:
    Jan 12, 2011
    Messages:
    5,386
    Location:
    San Luis Obispo, CA
    The resolution is usually to replace one of the tire pressure monitors inside the rim. Several have mentioned having to replace one or more. You will have to take it to a service center to diagnose which one is not responding properly.
     
  4. trils0n

    trils0n 2013 P85

    Joined:
    Feb 12, 2013
    Messages:
    1,438
    Location:
    SF Bay Area
    Usually means one of the tire sensors died or is having intermittent connectivity with the receiver. If the message stays on all the time, I think it means the control unit died (at least it did with my car)
     
  5. simonog

    simonog Member

    Joined:
    Jan 9, 2014
    Messages:
    409
    Location:
    United Kingdom
    I've had this message when:

    Tyre pressure sensor failed (internal battery died?)

    Sensor fell off inside tyre

    Software reboot needed

    Recalibration required

    Apart from 3 & 4, which can be tried at home, service centre help is needed.
     
  6. FlatSix911

    FlatSix911 918 Hybrid

    Joined:
    Jun 15, 2015
    Messages:
    4,046
    Location:
    Silicon Valley
    Is this service covered under warranty?
     
  7. trils0n

    trils0n 2013 P85

    Joined:
    Feb 12, 2013
    Messages:
    1,438
    Location:
    SF Bay Area
    Yes, covered under warranty.
     
  8. Lloyd

    Lloyd Well-Known Member

    Joined:
    Jan 12, 2011
    Messages:
    5,386
    Location:
    San Luis Obispo, CA
    yes if your car is still under the normal warranty.
     
  9. apacheguy

    apacheguy S Sig #255

    Joined:
    Oct 21, 2012
    Messages:
    4,563
    Location:
    So Cal
    On mine it ended up being two of the sensors and the TPMS ECU.
     
  10. Owner

    Owner Active Member

    Joined:
    Dec 20, 2012
    Messages:
    1,341
    Location:
    San Francisco Bay Area
    I have had this warning so many times.... and several fixes.

    now 60K in I have it again, and its going back in a month to get fixed. My tires are haunted.
     
  11. rpavlicek

    rpavlicek ***** Neophyte

    Joined:
    Feb 7, 2013
    Messages:
    75
    Location:
    Santa Clara, CA
    Thank you all for the information...its appreciated!
     
  12. sponjey

    sponjey New Member

    Joined:
    Jan 18, 2017
    Messages:
    1
    Location:
    chicago
    FWW, on the day I brought home my CPO S 85, this message came up on just before I got home. It didn't appear again till a few rides later but went away as it usually did. It seems to come on when I drive it hard or gentle brake.

    I called the service center who said that it can happen when the TPMS goes MIA. He suggested to go to Controls > Settings > Service & Reset > Tire Pressure Monitor > Reset Sensors. You're supposed to drive for 10min afterwards, but I haven't gotten to that point yet and observe if it comes back again.
     
  13. artsci

    artsci Sponsor

    Joined:
    May 10, 2012
    Messages:
    5,443
    Location:
    Timonium, Maryland
    This information might help. Illustrations have been omitted

    Tire Pressure Monitoring System

    Overview
    Component Location

    General

    WARNING: The TPMS is not a substitute for manually checking tire pressures and cannot register damage to a tire. The TPMS only provides a tire pressure warning and does not re-inflate the tires.
    WARNING: Do not use any tire liquid or aerosol tire sealant other than the one supplied with the vehicle, as this might cause a malfunction of the tire pressure sensors.
    The Tire Pressure Monitoring System (TPMS) monitors the air pressure and temperature of each tire and transmits this information via a Radio Frequency (RF) signal to the antenna module.

    If the air pressure in one or more tires is above or below a prescribed value, a message is sent to the instrument panel and the TPMS indicator light displays.

    NOTE: If the TPMS light is displayed shortly after a tire has been replaced or repaired using a different tire sealant than the one supplied with the vehicle, the TPMS wheel sensor might have been damaged.
    If a drop in tire pressure is detected, or if there is a fault with the system, the amber Tire Pressure Monitoring System (TPMS) indicator light displays on the instrument panel. The indicator light only advises that the pressure is low on one or more tires. No actual pressures are displayed and it is the user’s responsibility to determine which tire(s) require attention.

    WARNING: It is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger the TPMS warning light.
    CAUTION: Driving on a significantly under-inflated tire causes the tire to overheat and can lead to sudden tire failure. Under-inflation also reduces fuel efficiency and tire tread life and may affect the vehicle’s handling and braking ability.

    Component Descriptions

    TPMS Wheel Sensors

    1. Valve stem retaining screw

    2. Sensor unit

    3. O-ring

    4. Valve stem

    5. Valve nut
    The sensor is secured to the valve stem by a retaining screw. The sensor fits through the valve hole in the wheel rim, and is secured with the valve nut. It is sealed with an O-ring. The curvature of the sensor follows the form of the wheel rim.

    The wheel sensor contains a filter which prevents contamination by water vapor or dirt. The sensor also contains a pressure sensor, a signal processor, and an RF antenna. An integral temperature sensor prevents pressure readings from being affected by variations in temperature. Each sensor has a lithium-ion battery that has a life of up to 10 years.

    The wheel sensors have a pressure measurement range of 7.25 psi to 92.5 psi (0.5 bar to 6.3 bar) and a temperature operating range of -40°F to +248°F (-40°C to +120°C).

    When a new sensor is installed, it must learn its position in the system before the TPMS can operate correctly. For more information, see Sensor ID Learn Procedure.

    TPMS ECU
    1. ECU
      The TPMS electronic control unit (ECU) is installed at the rear of the vehicle above the rear diffuser. It contains a 433 MHz RF receiver, a data de-modulator, a data decoder, and an antenna.
    Operation
    TPMS Operation
    1. TPMS indicator
    When the acceleration sensor within the wheel sensor detects centrifugal force equivalent to 25 mph, the sensor begins transmitting pressure and temperature data every 4 seconds. When the sensor is stationary, it transmits every 40 seconds. If pressure changes rapidly, either falling or rising, the sensor transmits every 4 seconds, even when stationary. The wheel sensor transmits pressure and temperature data over a wireless Radio Frequency (RF) link to the antenna module. Error protection of the transmitted signal is provided by a cyclic redundancy check algorithm.

    The antenna module receives the data and converts it to a CAN message, which is then broadcast on the chassis bus. The vehicle firmware determines when to turn on the TPMS indicator light.

    The TPMS indicator light does not immediately turn off when the tire pressure is adjusted. After the tire is inflated to the recommended pressure, the vehicle can either be left stationary in drive mode or driven at speeds above 25 mph (40 km/h). It should not take more than 3 minutes while stationary or 1 minute while driving to activate the TPMS and turn off the indicator light.

    TPMS Malfunctions
    The TPMS indicator light also displays when the system is not operating correctly.

    The TPMS malfunction indicator light is combined with the tire pressure indicator. When the system detects a malfunction, the indicator light flashes for approximately one minute after the vehicle is turned on and then displays continuously. This sequence repeats for subsequent vehicle start-ups as long as the malfunction exists. The system might not be able to detect or signal low tire pressure as intended.

    TPMS malfunctions can occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly.

    Any time the TPMS sensors are not reinstalled in the same locations (for example, when rotating the tires), perform the TPMS sensor ID learn procedure.

    Sensor ID Learn Procedure
    The TPMS sensor learn procedure requires the use of the TPMS SmarTool.

    1. TPMS SmarTool

    2. Cable connector

    3. Diagnostic cable, part No. 1013758-01-A
    Refer to Service Manual procedure 34015100 to perform the TPMS sensor ID learn procedure.

    Setting Pressure Thresholds
    TPMS thresholds vary depending on suspension type, tire size, and region. In the Service Manual, refer to General Information > Technical Data > Tire pressures for a current list of thresholds.

    Setting the pressure thresholds requires the TPMS SmarTool. Refer to Service Manual procedure 34015500 to set the TPMS thresholds.

    Interference
    When many vehicles are together in the service area, TPMS sensors might interfere with each other and cause a TPMS fault to occur. The SmarTool might be slow to respond or work incorrectly in this environment. Moving the vehicle further away from other vehicles during programming improves reliability.
     
  14. Knightowl

    Knightowl Whovian

    Joined:
    Oct 14, 2016
    Messages:
    165
    Location:
    Colorado Springs
    I get this warning all the time when the temps are below 20F goes away when it get warmer than that, seems to be a winter issue.
     
  15. tdjvfr

    tdjvfr Member

    Joined:
    Mar 16, 2016
    Messages:
    72
    Location:
    NC
    I got the message off and on for a few weeks. TPMS could not read front left tire pressure. Sensor was replaced twice.
    Problem came back so SC installed new TPMS system. Haven't had an issue yet. I can now read each individual
    tire pressure. Something I my old classic could not do before.
     
  16. Joelc

    Joelc Member

    Joined:
    Oct 21, 2015
    Messages:
    102
    Location:
    San Mateo, CA
    Exact same situation for me. Was pleasantly surprised when I got the call from my SC tech advisor that they were upgrading me to the new style sensors. But now i'm worried that my summer wheels with the old style TPMS sensors aren't going to work when I put those wheels back on. Guess I'll find out in a few months.
     
  17. Knightowl

    Knightowl Whovian

    Joined:
    Oct 14, 2016
    Messages:
    165
    Location:
    Colorado Springs
    Have to update, since my last post here my tpms sys now gives that warning at anything below 30F and getting steadily worse so it has now been added as an issue to be checked out when I bring it in for service this Saturday.
     

Share This Page