Key Battery Diagnosis – 2011-2020 Volkswagen

NHTSA ID Number: 10161636

Manufacturer Communication Number: TT571802

Summary

Remote Key Battery Replacement.

 

127 Affected Products

Vehicles

MAKE MODEL YEAR
VOLKSWAGEN ARTEON 2019-2020
VOLKSWAGEN ATLAS 2018-2020
VOLKSWAGEN BEETLE 2011-2019
VOLKSWAGEN BEETLE CONVERTIBLE 2011-2019
VOLKSWAGEN CC 2011-2017
VOLKSWAGEN E-GOLF 2015-2018
VOLKSWAGEN EGOLF 2015-2020
VOLKSWAGEN EOS 2011-2017
VOLKSWAGEN GOLF 2011-2020
VOLKSWAGEN GOLF ALLTRACK 2017-2019
VOLKSWAGEN GOLF R 2012-2019
VOLKSWAGEN GOLF SPORTWAGEN 2013-2020
VOLKSWAGEN GTI 2011-2020
VOLKSWAGEN JETTA 2011-2020
VOLKSWAGEN JETTA SPORTWAGEN 2011-2014
VOLKSWAGEN PASSAT 2011-2020
VOLKSWAGEN TIGUAN 2011-2020
VOLKSWAGEN TOUAREG 2011-2017

 


Technical Background

There is no specification for testing the open circuit voltage of key batteries. Open circuit voltage testing using a voltmeter will result in misdiagnosis of the actual key battery condition. Remote keys are designed to function normally with voltage less than that of a new battery.

The following methods are recommended to make a correct diagnosis of the key battery.

 

Service

1. Perform Key Battery Test Plan (if Available)

  • This is only possible on certain MQB models beginning with model year 2018.
  • Check for a Technical Bulletin, and use the GFF Test Plan if available.
  • The test plan is titled “Remote Control Battery Check” in ODIS.

 

2. Check LED Indicator on the Key

  • Watch the LED indicator on the key while pressing a button.
  • As long as the LED illuminates, the key will operate within the normal range.
  • If the LED does not illuminate when pressing a button the battery should be replaced.

 

3. Check for MFI Message

  • With the ignition on, push any button on the key and watch for a message in the MFI.
  • The battery condition is transmitted from the key to the BCM.
  • If an MFI message indicates the key battery is low, it should be replaced.

 

4. Measure Battery Voltage – Using a 320 Ω Load

  • It is necessary to measure the voltage with a load to simulate operating conditions.
  • Resistor decade box VAS 6345 may be used to dial-in 320 Ω.
  • Connect the resistance of 320 Ω in parallel with a digital voltmeter.
  • Measure the voltage across the coin battery after 6 seconds.  If under 2.6 Volts the battery should be replaced.

 

5. Check DTCs and Measuring Values for Remote Key (MQB Vehicles Only)

  • MQB vehicles will store a DTC in the BCM if a key detects a low battery condition.
  • The DTC will indicate which remote number reported the low battery condition.
  • Use measuring values to determine the current remote number and battery condition.
  • AW 09 > Guided Functions > Measuring Values > “Vehicle key with remote control”
  • As a button is pressed, check if the current remote number matches with the DTC.
  • As a button is pressed, if the battery condition is “low” or “Not OK” it should be replaced.

 

6. Test Battery using a ZTS MBT-1 “Multi-Battery Tester

  • This tester is commercially available in the United States.
  • The result of the pulse-test is displayed as a remaining percentage of battery charge.
  • If the indication is less than 60% on the ZTS tester, the battery should be replaced.

 

 


Transaction No: 2052080/2

Release date: 6/14/2019

https://www.nhtsa.gov/recalls?nhtsaId=10161636

https://static.nhtsa.gov/odi/tsbs/2019/MC-10161636-0001.pdf

MC-10161636-0001

 


 

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Last update on 2023-01-29 / Affiliate links / Images from Amazon Product Advertising API

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