Trunk pop delay
Thread Starter
Junior Member
Joined: Nov 2009
Posts: 20
Likes: 0
From: Chicago, IL
2002 E320 Sedan
Trunk pop delay
This has been an issue since I have had the car, but figured I'd finally do something about it. For some reason, when I try to pop the trunk, it has a long delay before it finally happens. I can hear something mechanical going on for a bit, then it pops. It takes around 5 seconds or so. I searched for existing threads but they all were about not ever popping.
Any suggestions where to look?
Any suggestions where to look?
MBWorld Fanatic!
Joined: Nov 2008
Posts: 1,560
Likes: 10
210 55
Maybe you have a leak in the vaccum line (from the pump under the rear right seat to the trunk vaccum) this is the easy way. the other way is you have a bad pump :S is a little expensive unit
Fabio Daniel
Fabio Daniel
MBWorld Fanatic!
Joined: Jan 2004
Posts: 5,943
Likes: 178
From: Seattle WA
99 E320
examine the pump. look carefully at the fitting which comes out of the pump
which services the trunk (labelled 'HECK"). look also at the junction between
the grayish "T" fitting and the yellow hose. the hoses are somewhat brittle,
as opposed to rubber, and if treated firmly, can crack or split.
from here, it gets a little more labor intensive as you would need to trace the
hose up....into the trunk, which means removing the trunk lid liner (not difficult,
but more tedious and to be patient). the goal here is to look for other junctions
to the rear latch to see if it is leak proof.
you can also try puffing into the hose from the pump end (again, be careful
in handling). the gray "T" fitting simply clips into the pump. you can also
use this and 'puff' into the hose if you have one handy....
if everything thus far seems healthy.....while you still have the HECK end of
the hose disconnected from the pump, try operating the trunk release button
while you try to detect air being pumped out at the HECK hole of the pump.
as Fabio mentioned, we hope it's burping out air because if it isn't, it can be
several hundred dollars.....and.....a replacement will need the SDS tool to
code it for your car to operate.
