Heating and Cooling› Air Conditioning
WEBASTO
DIAGNOSTIC ADAPTER AT2000ST 3500 50
SKU: W040 5092555B
Beginner — under 30 min
Description
MIA's Description
This diagnostic cable, with part number 1319940A, is a crucial component for troubleshooting and maintaining your Webasto auxiliary heater system. Its specific design ensures compatibility with the aforementioned heater models, facilitating efficient diagnostics.
Fitment
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Available on iOS & Android
Specifications
| Brand | WEBASTO |
| Part Number | W040 5092555B |
Videos
Webasto Thermo Top V/ Thermo Top- EVO
Heater Unlock Procedure
Webasto Thermotop W-BUS adaptors - firing up the Thermotop V
Webasto Thermo Top C wiring to start manually.
HOW TO: Repair Webasto Auxiliary heater in VW Touran
Webasto Thermo Top Heating - Off the grid.
Unlocking Webasto Aux. Heater VCDS
Test Webasto Thermo Top C! First Test run.
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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