The slip clutches can wear out and fail; had it happen on a 91 corolla; back in 2000, the motor alone was $300.
With the w210 (canbus versions), the rear motors are "smart" insofar as they have the door control module integrated with them. The fronts are separate from the door control module. The only "programming" required is to run the window to the limit and hold the switch for a few seconds (not all the way down into "express"; just the normal rolldown). Not doing this only disables the "express" up/down feature on that window. (you have to do the same thing when reconnecting the battery and it is documented in the OM. I believe the mechanism used for the limit is a magnet on the motor shaft, a hall effect sensor, and a revolution-counter... -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On Dec 11, 2010, at 19:56, Walt Zarnoch <zarnoch...@gmail.com> wrote: > Is that the "senses when your finger is on the glass and doesn't pinch it, > but when it goes defective the window refuses to move at all" system? > > If so, whatever happened to a simple current sense that shuts down the > motor, or a slip clutch? > > Walt > On Dec 11, 2010 7:48 PM, "Peter Frederick" <psf...@earthlink.net> wrote: >> Lexus has them too, in some models. Not just argon filled, but they >> are colored as well, so you have to get one that matches the rest... >> They also have "smart" window motors, although I don't know if they >> are as much of a hassle as MBs or not. >> >> Can you spell S..T...U..P...I...D? >> >> The numbskulls who thought this stuff up forgot that one of the >> reasons people (yeah, even rich ones) bought them because they hold >> their value so well. Grossly expensive replacements for stuff that >> breaks all the time and cannot be fixed but has to be swapped out >> kill resale value, and the idea of dumping a hundred grand on a car >> with no resale value might seem reasonable to a street walker turned >> movie star, but business people with lots of money HAVE lots of money >> because the watch every single penny of it. Disposable luxury cars >> only work if you just lease them, and then the dealer or manufacturer >> is stuck with a huge loss. >> >> Teenybopper marketing gone wild! >> >> Peter >> >> _______________________________________ >> 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
