Test 4: Trunk Lid Switch

WARNING: This page is about a different car, the 2000 Mercedes-Benz SLK230 and 1999 Mercedes-Benz SLK230. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Trunk lid switch may also be referred to as trunk lock/trunk illumination rotary latch selector switch.

Connect breakout box to Pneumatic System Equipment (PSE) control module. Measure voltage between breakout box terminal No. 59 and PSE control module connector No. 2 terminal No. 4. Close trunk lid. Voltage should be less than one volt with trunk closed. Open trunk lid. Battery voltage should exist with trunk open. If voltage is as specified, test is complete. If voltage is not as specified, check wiring. See WIRING DIAGRAMS . If wiring is okay, replace trunk lid switch.