MB SD Compact Connect C4 Self-test Manual Please kindly read following messages before your self-test: 1) Start your car, connect the device with your car. 2) Connect all the cables rightly and tightly. Then follow the following pictures to complete self-test for your MB SD Compact 4 www.obdtoolshop.co.uk www.obdtoolshop.co.uk www.obdtoolshop.co.uk