Bmw 3 series 1996 Upolsterer had seat back off & now wont lock in upright possision

fuse box diagrams

BMW 5-Series (E39; 1996 - 2003) - fuse box diagram ...

https://www.autogenius.info > bmw-5-series-e39-1996-...
Aug 26, 2018 - BMW 5-Series (E39; 1996 - 2003) - fuse box diagram. Year of production: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 ...
Missing: 740il ‎' Must include: 740il

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  BMW 3 Series E36 and E35/5 (1990 - 2000) - fuse box ...

  https://www.autogenius.info > bmw-3-series-e36-and-e...
  May 28, 2018 - BMW 3 Series E36 and E35/5 (1990 - 2000) - fuse box diagram · Front power distribution box · Relay carrier under LH side of dash · Connector strip ...
  

Picture & amperage & description of every single fuse ...

https://www.bimmerfest.com > ... > E39 (1997 - 2003)
Mar 1, 2013 - There are SIX fuse box locations in my 2002 BMW 525i E39 (here is a 1997 540i fuse location chart):. EF1 to EF5 <= at the back of the ebox ...

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You do not say what design 3 series; but for E36 with electric seat adjustment, Odometer Gears (link below), makes replacement gears for the electric seats for approximately $40 each. This is the part that typically wears/breaks for seat reclining.
BMW-US E36 Driver's Seat Recline Gear/White
BMW-US E36 Passenger's Seat Recline Gear/Green
http://www.odometergears.com/products/BMW/3+Series+E36+90-00/26

If you can start vehicle it is in the column, Key switch is not engaging unlock. be sure to disconnect battery and remove fuse for airbag, if you don't you might be in for one hell of a scare or injury and uip to 750.00 to replace.

ASSUMING ......it is the same as a 325i

-fuel pump located under rear seat (right side looking forward )
-working inside the car lift the rear seat
-Pull up rubber grommet which cable goes through
-remove circular steel cover plate
-disconnect mutliplug on top of pump
-unscrew bezel using hammer & punch
-Pull up pump from tank
-replace with new pump ensuring that rubber seal doesnt get kinked
-replace bezel
-connect mutliplug and test before replacing steel cover
-Ensure no leaks, even take car for a ride to ensure no leaks
-if tests ok then replace steel cover and grommet, & seat.

should take about 30mins taking you time.

could be a problem with the security chip in the key.

remove cover between seats to expose cable adjusters and back them off till slack. jack up rear of car (chock front wheels) remove a rear wheel stud and you can view the star wheel adjuster inside the drum, with a thin screwdriver wind it up till wheel locks then back off about 15 clicks, do same on other wheel, wind up adjusters inside car till wheels lock at about 5 clicks, check for binding when h / brake is fully down, thats it.

in the trunk. you will need to get under the hood if the trunk wont open to charge the battery. There is a post on top of the intake manifild

You have to lremove the set part first two bolts in the lower front and then there are two more bolts under there at the end of prongs

break the lock and replace or try removing the back seat to gain entrance to the trunk and retreve your key

hello tracieandmia, I am assuming that the seatbelt buckles are just underneath the seat. The rear seat bottem can be removed for access. If you reach under the front part of the seat bottem near each corner and lift up, the seat will release. You will need to give it a little yank and use a little force for it to release. Once each corner is released you can remove the seat bottem. To install the seat, slide it back under the seat back and push hard down on each front corner that you had previuosly pulled up at. You should hear a definite click/lock sound when the catches are locked.