aviator14

I have a 2003 SL500 with 47,000 miles. Recently lost power door locks and soft close trunk. Fuse good and pulled PSE pump and tested motor.....ran fine. Auto shop then tested pump and stated new pump needed due to 'internal failure.' Had pump rebuilt with new circuit board. Installed the pump and it works intermittently. Current symptom........every 4 seconds pump cycles on and air is drawn in. Works intermittently still. Guessing it could be a leak. Any experience with this? Thanks !

cdk4219

It’s leaking somewhere, probably the trunk latch,