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#1
08-05-2014, 04:47 PM
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memory seat switch
is it possible to gain seat position memory function just by swapping the door switch from one without it to one with it?
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'92 300D 2.5 '99 E300TD 
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#2
08-05-2014, 06:13 PM
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Not on your car.
The 2nd gen 124 non memory seats are just simple reversing switches that send direct battery power to the motors. Memory seat switch on 2nd gen 124 uses a group of resistors to multiplex the various switch commands onto a few wires. In order to upgrade to memory seat you will need to grab the following at the yard: Seat base with motors (your motors do not have position sensors, so they can't remember where to go back to) Headrest motor (need the sensor from that too) Column adjuster motor (need the sensor in that motor too) and its switch Control box under the seat Wiring harness complete to the door and steering column Door switch Power wiring back to the main fuse box power seat relay I would download the wiring diagram book for the 124 and compare the two systems.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech
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#3
08-06-2014, 04:25 PM
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wow thanks for the detailed response. i had a feeling it wouldn't be that easy...
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'92 300D 2.5 '99 E300TD
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Linear Mode
