Test 26: Trunk Lid Lock 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.
Disconnect PSE control module. Check voltage between PSE control module connector terminals No. 11 and 21. With key in trunk lid lock, turn key to LOCK position. Less than one ohm should exist. With key in rest position, 20,000 ohms should exist. With key in UNLOCK position, less than one ohm should exist. If resistance is not as specified, check wiring. See WIRING DIAGRAMS . If wiring is okay, replace trunk lid lock switch.