How to solve Lonsdor K518 “Vehicle Connection Failed”

Lonsdor K518ise key programmer shows “vehicle connection failed, please check the connection between the device and vehicle OBD”. How to solve it?

Solution: It mayOBD cable or the DB25 port get problem, need to test them.

OBD cable Test: 3 connectors on OBD cable.

Connector 1: connect K518ISE OBD port;

Connector 2: connect KPROG adaptor

Connector 3: connect the vehicle OBD port

Step 1

Unplug the K518ISE main unit and turn it off

Step 2

Connect the DB25 cable(OBD cable) to k518ISE main unit, using a multimeter and switch to the diode stalls

Step 3

Use the Red pen to touch the metal part

Step 4

Use the black pen to test the resistance of each pin of the vehicle connector

*PIN 1 and 8 should have no resistance; PIN2-7 and 9-16 should have resistance

1.All pins have no resistance, then DB25 cable has a problem

2.Measurement is correct as it supposes to be, and device still can’t communicate with any cars it support, then send back device and OBD cable for repair.

Learn more: https://www.chinaobd2.com/vp-lonsdor-k518ise-plus-lke-emulator-and-super-adp-8a-4a-adapter.html

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