tried putting this in the maintenance but a week with no responce has lead me to post in this section...
first off it is a 92 sc 300 auto basicly stock. ok so i had a remote start installed in the car, fist time i got it back it had some programing issues. (heater didn't come on and the lights didn't shut off) well i brought it back to the guy and then it worked perfect.... but this last week the power dood locks, power to the tilt stering wheel, and the climate control memory. the alarm and start works fine but this other stuff stoped working??? kinda off subject is there somewere i can get a in depth service manual. like hanes or somthing? thanks for any help you can give

 

A list of Gremlins currently experiencing:

When I purchased the vehicle:
*seat memory came with no function
*power mirrors came with no function
*have to manually open the trunk came with no automatic function

Since purchase, had an aftermarket alarm system installed.. however had the
system disconnected to see if that might have been the mystery behind the new problems. No such luck. Starter problem now. Either the solenoid or the starter, checking this Saturday. Already checked, the starter has power running to it. However with a little patience, does start still. Battery cables fine, and cleaned, as well as coated. All fuses are fine, with the exceptions of no power to these two sections when tested: ST HTR (my guess is seat heater) as well as S T <~(no clue what that means). We have in our possession a 1992 LEXUS SC300 OEM FACTORY WIRING DIAGRAM MANUAL,
with a little outside help, will start diagnosing this weekend.

Here's what went wrong a couple of months after purchase:

• power locks inoperable:have to manually lock or use the key
  
• heater memory no more: always resets to off position when starting the vehicle.
  
• odometer memory resets
  
• power tilt wheel no function: worked perfectly, now not at all.
  
• dome light no longer functions
• rear view mirror on dim no longer functions
• vanity mirror lights no longer functions
  
• cigarette lighter no longer functions/light works fine
  
• passenger seat will not go forward automatically
• however the power seats still slide on tracks no memory
  
• vehicle no longer senses when doors are open or ajar

Question Is their a common ecu involved here? perhaps something in the wiring?

 

bump please anyone?????? any guru's or shops people can recomend????