The Volkswagen Passat B5.5 is a popular vehicle known for its reliability and performance. Using a VCDS (VAG-COM Diagnostic System) interface allows owners to access and modify various control modules, enabling customizations and troubleshooting. This guide provides a comprehensive overview of common VCDS applications for the Passat B5.5. Ross-Tech is not responsible for any damage resulting from these instructions. Use at your own risk.
Engine Module (01 – Engine)
The engine module is a crucial component, controlling vital engine functions. VCDS allows for adaptations and adjustments.
Idle Speed Adaptation
Consult your repair manual for specific instructions. Generally, with a warmed-up engine at idle:
- [Select] [01 – Engine] [Adaptation – 10]
- Enter Channel 01
- Enter an adaptation value between 124 and 132
- [Save]
Throttle Body Adaptation
Do not start the car. Key ON only.
- [Select] [01 – Engine] [Measuring Blocks – 08]
- Group 060 or Group 98
- [Go!] [Switch to Basic Settings] The display will show “ADP RUN”. The adaptation process starts automatically. Observe the values changing and listen for the throttle body cycling.
- After approximately 30 seconds in Basic Settings, return to normal settings. Do not touch the accelerator pedal during this process.
Cruise Control Activation (DBW)
New ECUs may have cruise control deactivated.
- [Select] [01 – Engine] [Login – 11]
- Enter 11463
- [Do It!]
Other Modules Accessible with Passat B5.5 VCDS
VCDS compatibility extends to numerous other modules in the Passat B5.5:
-
02-Auto Trans (KWP-1281): Functions as expected.
-
03-ABS Brakes (KWP-1281): Functions as expected.
-
08-HVAC (KWP-1281): Functions as expected.
-
15-Airbags (KWP-1281): Functions as expected.
-
17-Instruments (K1, KWP-1281): Functions as expected. For Immobilizer procedures, consult the Ross-Tech Wiki: http://wiki.ross-tech.com/index.php/Diagnostic_Procedures#Immobilizer_Information
-
19-CAN Gateway (KWP-1281): Located in the instrument cluster, this module controls CAN-BUS communication. Coding is determined by adding values for available equipment (0 – None, 1 – Automatic Transmission, 2 – ABS, 4 – Airbags). For example, a car with Automatic Transmission, ABS, and Airbags would have a coding of 00007 (1+2+4=7).
-
22-AWD: This module is not applicable to the Passat B5.5’s Quattro system, which is purely mechanical. This address is used in transverse-engine Volkswagen/Audi vehicles with a Haldex AWD system.
-
35-Central Locks (KWP-1281): For non-US vehicles with manual windows.
-
37-Navigation (KWP-1281): Functions as expected.
-
46-Central Convenience (KWP-1281): For vehicles with power windows. Offers various customizable options.
Selective Unlocking (Central Convenience)
- [Select] [46 – Cent. Conv.] (or 35 – Cent. Locking for manual window cars) [Recode – 07]
- Note the existing coding. Modify the last digit: odd numbers enable selective unlocking (one press unlocks driver’s door, two presses unlock all doors). Adding 1 to the coding will change the behavior.
- [Do It!]
Lock/Unlock Horn/Flash Confirmation (Central Convenience)
-
[Select] [46 – Cent. Conv.] (or 35 – Cent. Locking for manual window cars) [Adaptation – 10]
-
Select Channel (03-08) and set Adaptation Value (1 = On, 0 = Off)
- Channel 03: Auto Lock
- Channel 04: Auto Unlock
- Channel 05: Unlock Horn Confirmation
- Channel 06: Lock Horn Confirmation
- Channel 07: Unlock Turn Signal Confirmation
- Channel 08: Lock Turn Signal Confirmation
-
[Save]
-
55-Headlight Range (KWP-1281): For vehicles with OEM Xenon HID headlights.
-
56-Radio (KWP-1281): Functions as expected. Radio recoding is possible, consult the factory repair manual for detailed coding information.
-
58-Fuel Tank (KWP-1281): Applicable to W8 models only.
Conclusion
Using a Passat B5.5 Vcds interface unlocks a wealth of customization and diagnostic options. Remember to always consult your repair manual and proceed with caution when modifying vehicle settings.
