Towing vehicle tester 12 V / tester for 13-pin trailer sockets

The 12V towing vehicle tester is a professional testing device for checking the 13-pin trailer socket (ISO 11446) on the towing vehicle. Ideal for automotive workshops for quick troubleshooting, functional testing of trailer lighting, and preparation for vehicle inspections – reliable even with modern CAN bus vehicles thanks to integrated load resistors.

Your advantages in the workshop

• Checking the trailer socket – without a trailer: To check the (electrical) trailer socket on the vehicle, no trailer is required.
• Testing conveniently from the driver's seat: Thanks to the 5.0 m connection cable, one person can comfortably perform all tests from the driver's seat.
• Fast, clear diagnosis: The proper functioning of the socket is visible directly on the test device via an LED display when the consumer is switched on.
• CAN bus compatible: Integrated load resistors (e.g., for turn signal and rear fog light functions) ensure practical test results.

Test functions (13-pin, 12 V)

• Testing of the relevant lighting functions at the trailer socket, including:
  • blinker
  • brake lights
  • taillights
  • reversing light
  • rear fog light

Lamp failure and trailer simulation

• With ZWT 20, the functionality of a trailer can be simulated (simulation of a "fully functional trailer").
• With ZWT 20, relevant lamp failures can be simulated – the lamp failure is displayed in the cockpit (practical for diagnostics and MOT checks).

Typical applications in the workshop

• After initial installation (e.g., retrofitting a towbar/socket)
• Vehicle inspection preparation and inspection
• Troubleshooting for sporadic failures, contact problems, coding/trailer recognition
• Functional check after repair/accident repair in the rear area

Technical specifications

• • Connector: 13-pin
  • Voltage: 12 V
  • Standard: ISO 11446
  • Cable length: 5.00 m

Article no.: ZWT 20 (080247_1)