My system only works from the drivers door. When it times out the pump quits sudden after ~20 sec. and sometimes is difficult to reset. So I gave up and left it timed out, but now realize that it drains my battery. Now the thing is unplugged in the trunk. I am not desperate to get it to function, but rather curious what is going on. What seems strange is that when I disconnected the + battery cable which should reset the pump I still read 1.5 A discharge. If it resets and does not run it should not draw a current.
On Tue, Jan 29, 2013 at 8:29 AM, Jim Cathey <j...@windwireless.net> wrote: > This is on my '82 W126 300SD. It definitely is the CL unit since unplugging >> the unit in the trunk stops the parasitic current draw. The unit "trips >> out" in case of a leak when the locking/unlocking process can not be >> completed in a certain time. This keeps the unit from running forever. My >> suspicion is that a locking relay of some sort does that. Resetting is >> done >> by momentarily removing power from the unit. >> > > Hella, or VDO? The early Hella locking pump, that operates from the > driver's door only, hasn't much in the way of electronics in it. > > http://userweb.windwireless.**net/~jimc/mb240d.html#**vacuumpump<http://userweb.windwireless.net/~jimc/mb240d.html#vacuumpump> > > It has some snap-action switches in it, and some kind of > low-tech electronic timer that'll cut the drive to the motor > if it runs for too long. It's kind of a POS. I don't think > it can get wigged out, unlike the VDO, but it _can_ fail > mechanically, and it's possible that the timer has a weak > capacitor or something. When it times out it's not sudden, > the motor just slows down and eventually stops. What if it > wasn't quite able to fully cut off due to leakage? > > -- Jim > > > > > ______________________________**_________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives > http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> > -- Hans Neureiter, Katy, TX '82 300SD '01 VW New Beetle 1.9L TDI _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
