12 V towing vehicle tester, test device for trailer sockets 13-pin

The 12V towing vehicle tester (ZWT 40) is a professional testing device for checking the 13-pin trailer socket (ISO 11446) on the towing vehicle. Automotive workshops use it to quickly, systematically, and practically test the relevant lighting functions – ideal for vehicle inspection preparation, after towbar/socket installation, and for troubleshooting.

Your advantages in the workshop

• No trailer needed: No trailer is required to test the (electrical) trailer socket on the vehicle.
• All tests from the driver's seat: Thanks to the 5 m connection cable, the user can conveniently perform the tests from the driver's seat – even alone.
• CAN bus compatible: Suitable for modern vehicles (including bulb monitoring).
• Structured diagnostics in a case: Switches and test lights are integrated into the test case and can be individually switched on or off – perfect for reproducible test procedures.

Test functions (13-pin, 12 V)

• Testing the most important lighting functions at the 13-pin socket on the towing vehicle:
  • taillights
  • brake lights
  • blinker
  • reversing light
  • rear fog light
  • Additionally: Function and failure testing of the individual light bulbs.

Simulate lamp failures in a targeted manner

• With the ZWT 40 from Leitenberger, all lamp failures can be simulated individually.
• The bulb failure is displayed in the cockpit (depending on the vehicle/monitoring system) – ideal for reproducing customer complaints and reliably narrowing down faults.

Trailer simulation

• With ZWT 40, the functionality of a trailer can be simulated – as a fully functional trailer (simulation), without the need for a real trailer.

Typical applications in the workshop

• After initial installation (e.g., retrofitting a towbar/socket)
• Vehicle inspection preparation and inspection
• Troubleshooting for failures, loose connections, corrosion, ground/wiring problems
• Functional check after repair/accident repair in the rear area

Technical specifications

• • Connector: 13-pin, 12 V (ISO 11446)
  • Cable length: 5 m
  • Power supply: via permanent live feed and/or charging line
  • Delivery: in a sturdy plastic case

Article number: ZWT 40 ( 080249_2 )