Description
The 12 V trailer tester (ZWT 40) is a professional testing device for checking the 13-pin trailer socket (ISO 11446) on the towing vehicle. Car repair shops use it to check the relevant lighting functions quickly, systematically, and in a practical manner—ideal for preparing for vehicle inspections, after installing a trailer hitch/socket, and for troubleshooting.
Your advantages in the workshop
- No trailer required: 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 switched on and off individually – perfect for reproducible test sequences.
Test functions (13-pin, 12 V)
- Testing of the most important light functions on the 13-pin socket on the towing vehicle:
- Tail lights
- Brake lights
- Turn signals
- Reversing light
- Rear fog light
- Additionally: Function and failure test of individual bulbs.
Simulate specific bulb failures
- With ZWT 40 from Leitenberger, all bulb failures can be simulated individually.
- The bulb failure is displayed in the cockpit (depending on the vehicle/monitoring system) – ideal for recreating 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 trailer hitch/socket)
- HU preparation and HU approval
- Troubleshooting in the event of failures, loose connections, corrosion, ground/wiring problems
- Function check after repair/accident repair in the rear area
Technical specifications
- Plug: 13-pin, 12 V (ISO 11446)
- Cable length: 5 m
- Power supply: via continuous positive and/or charging cable
- Delivery: in a sturdy plastic case
Equipment
- VK 26 (080327) adapter from 13-pole plug 12 V (ISO 11446) to 7-pole socket.
