How do i fold up the third row seats in a 2002 landrover discovery?

Third row power seat relay , power fold seat module , third row seat control switch . Anyone of these could be the cause for the seats not folding ? With a electronic module involved codes could be stored pointing to the problem . Your best bet mite be to take it to a qualified repair shop.

Your missing something's G-404 has nothing to do with it !
Seats - Third Row
The third row seat:

• is three-passenger seat.
• a 60/40 bench seat.
• folds down for more cargo area.
• has optional power fold down seats.

Third Row Power-Fold Seat
CAUTION: To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position.
CAUTION: Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s).
The third row power-fold seat consists of the following electrical components:

• right third row seat relay.
• left third row seat relay.
• right power-fold seat motor.
• left power-fold seat motor.
• right front third row seat switch (if equipped).
• left front third row seat switch (if equipped).
• right rear third row seat switch.
• left rear third row seat switch.

For the third row power-fold seat to operate, a shared ground is supplied by the body security module (BSM) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the liftgate glass, liftgate door or any entry door must be open.
The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short drive cable which is connected to the drive gear assembly.
The relay's are located in Aux. relay box #2

The seats shouldn't lock, its probably bound up. If you don't want to spend big bucks at the dealership, you might stop by a local automotive uphostery shop. Those guys work with seats every day.

mechanism lower seat driven by electric motor is broken.

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Mar 27, 2014 - Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition andLincoln Navigator SPONSORED BY: ... First the 3RD row seats won't fold down, noclicking, no sounds, nothing. I the fuses are good and there is power at the fuse box, but no power at the motors or switches. Based on continuity ...

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Mar 14, 2010 - 3rd row powerfold seat stuck down 2007 - 2014 Expedition ... 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator ... I also tried lifting the seat while my wife was pushing the button to raise it, to no effect. There is defnitelypower going to the motor but it just isn't ... Join Date: Feb 2005.

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Call the dealership and ask them how to reset the electronic on your Ford Expedition after changing the battery. Anything else is happen? Maybe like the radio wont turn on, hit the turn signals and the windshield wiper turn on. ***** things happen after replace the battery. I know what it is, it the darn wigits. GB you....stewbison

The third row seats do fold flat. If you have the owners manual, it will have instructions on how to fold the seats. If you don't have a manual, drop by your nearest Chevy dealer and I'm sure they would be glad to show you how to fold the seat.

in briten the child seats must fase forwards unless there made to fase the other way,,,, so its a big NO,,, never ever put children in the rear side seats of any 4x4 its just not safe for them to be there,
4x4s can and do turn over so easly in a crash and in the rear side seats there going to get realy hurt, however there your children

Nope. 3rd row was never offered with a trailblazer even the EXT modles.