Test Preparation
WARNING: This page does not describe the selected car, but rather 29 other vehicles, including the 1999 Mercedes-Benz E430, 1999 Mercedes-Benz E320, 1999 Mercedes-Benz E300, 1999 Mercedes-Benz CLK430, and 1999 Mercedes-Benz CLK320. However, it is still accessible from the selected car via links, so may be relevant.
Ensure battery voltage is 11-14 volts. Ensure all fuses are okay. Ensure voltage supply to control modules and CAN data lines are okay. Connect HHT to DLC according to manufacturer's instructions prior to performing system tests.