Test 28: Left Front Power Window Switch
WARNING: This page does not describe the selected car, but rather 7 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.
Connect Hand-Held Tester (HHT) to Data Link Connector (DLC) located in engine bay. Monitor lower control panel control module readings. Turn ignition on. Press driver's power window switch to down position. DOWN should be displayed on HHT. Press driver's power window switch to down position and hold. AUTO, DOWN should be displayed on HHT. Release switch; "0" should be indicated on HHT. Press driver's power window switch to up position. UP should be displayed on HHT. Press driver's power window switch to up position and hold. AUTO, UP should be displayed on HHT. If readings are not as described, check lower control panel control module. See COMPONENT LOCATIONS .