This guide provides step-by-step instructions on how to check, activate, and reset the Tire Pressure Monitoring System (TPMS) on Volkswagen Golf and Jetta models using VCDS (Vag-Com Diagnostic System). We’ll cover both direct and indirect TPMS and how to potentially switch between them.
Understanding VW TPMS Systems
Volkswagen vehicles utilize two primary TPMS types:
- Indirect TPMS: This system, standard on many VW models from 2007 and reintroduced in 2011 for Golf and Jetta, relies on the ABS wheel speed sensors. It detects tire pressure drops by monitoring variations in wheel diameter. A smaller diameter suggests a loss of air pressure, triggering the TPMS warning light. This system is cost-effective, doesn’t require additional sensors, and eliminates the need for sensor replacement due to battery life.
- Direct TPMS: This system uses wireless sensors within each tire to directly measure pressure and temperature. Data is transmitted to the car’s computer. While more accurate than the indirect system, direct TPMS requires sensor maintenance and replacement as batteries deplete (typically every 6-9 years). This system is often found in higher-end models like the Touareg. You can identify this system by the metal, stiff valve stems with a lock nut at the base. Flexible rubber valve stems indicate an indirect system.
Resetting the TPMS Light
For Direct TPMS: Inflate all tires to the recommended pressure (found on the driver’s side doorjamb or in the owner’s manual). Use a tire gauge to ensure accuracy. Occasionally, slight overinflation followed by deflation to the correct pressure may be necessary.
For Indirect TPMS: Inflate tires to the recommended pressure and use a tire gauge to verify. If your vehicle has a TPMS reset button, press and hold it to reset the system.
Activating the Hidden Indirect TPMS with VCDS
If your VW lacks a TPMS button or you’re switching from direct to indirect TPMS, a retrofit button kit (available from suppliers like kufatec.com) is recommended. However, VCDS allows activation and reset without the physical button.
Procedure:
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Connect your VCDS cable and launch the software. Ensure the cable’s green LED is illuminated.
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Select “Select” to access control modules. Choose “ABS controller.”
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“Long Coding” should appear under Software Coding. A numerical value here might indicate an incompatible module. Click on “Coding” then “Long Coding Helper.” Important: Record your original code before making any changes.
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Navigate to Byte 16 within the Long Coding Helper.
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Enable “Bit 2 – Tire pressure monitoring (TPMS/7K6) installed.” Exit the helper; the new code will populate under “New coding.” Click “Do it!” to save. Exit the module.
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After ignition, the TPMS light should briefly illuminate. The system requires approximately one hour of driving, including highway speeds, to adapt. Expect potential unreliability during this period.
Resetting TPMS with VCDS (No Button)
- Access the ABS module in VCDS and select “Basic Settings.”
- Choose “Group 042” and click “Go!” to reset.
Conclusion
Checking your TPMS with VCDS offers a powerful way to manage your Volkswagen’s tire pressure monitoring system. While switching from a direct to an indirect system might be possible, it’s crucial to understand the legal requirements regarding TPMS functionality in your region. Always prioritize safety and consult official documentation before modifying your vehicle’s systems. Remember, a properly functioning TPMS is vital for safe and efficient driving.
