Webasto Thermo Test - Heater OBD2 Diagnostic Suite Tool 1.19–3.0

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Webasto Thermo Test Multi-Version Heater Diagnostics​

v1.19–3.0 multi-version suite for Webasto heater diagnostics, live data and service tests

This multi-version package of Webasto Thermo Test (WTT) brings together several generations of the official PC-based diagnostic software for Webasto air and water heaters. It is intended for workshop technicians and advanced users who need to diagnose, monitor and service Webasto heaters via W-Bus, K-Line or compatible interfaces in passenger cars, vans, trucks, buses, campers and marine applications.

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Frequently Asked Questions​

Which Windows version is recommended?
For maximum stability during ECU flashing and diagnostics, a clean installation of Windows 10 (64-bit) is recommended.
Is it compatible with J2534 PassThru?
Most modern software versions support standard J2534 interfaces like Scanmatik 2 Pro, OpenPort 2.0, and specific VCI adapters.

What's inside:

• Overview & screenshots
• Version history and compatibility
• Download link and setup notes

View full details and download — Webasto Thermo Test Multi-Version Heater Diagnostics