Test 36: Left Rear 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 door control module readings. Turn ignition on. Press left rear power window switch to down position; DOWN should be displayed on HHT. Press left rear power window switch to down position and hold; AUTO, DOWN should be displayed on HHT. Release switch; "0" should be indicated on HHT. Press left rear power window switch to up position; UP should be displayed on HHT. Press left rear power window switch to up position and hold; AUTO, UP should be displayed on HHT. If readings are not as described, perform TEST 15: LEFT REAR POWER WINDOW SWITCH under SYSTEM TESTS.