Note. A description of the parts and components of the driver's seat is given; it is similar for the front passenger seat; installation is additional. details are made in a mirror. For clarity, the four-way lumbar support and floor covering are not shown in the figure.
1. Storage compartment; 2. Bolt. 4 things. 50 Nm; 3. ISOFIX child seat anchors (only for front passenger seat). Check after an accident; 4. Belt lock; 5. Tunnel side cover; 6. Standard front seat (electrical adjustment); 7. Headrest; 8. Threshold side trim; 9. Lever; 10. Lever. Switch for adjusting the longitudinal position, backrest angle, seat height; 11. Lumbar support lever; 12. Connection module cover; 13. Plug block; 14. Cover for seat rail. 4 things.; 15. El. connector with corrugated tube for modular wiring;
Removing the front seat with a faulty electric motor for adjusting the longitudinal position of the seat or a faulty control unit
Check seat fore/aft adjustment or control unit
Move the seat all the way up. Before removing the seats, check the electrical and electronic components as well as lines to prevent unnecessary repair costs. Perform the following checks: Check the fuse. Check the voltage at the connection module and, if necessary, perform a fault search. Check the voltage at the control unit. Check the voltage of the seat longitudinal adjustment motor -V288-. If the fuse is defective, replace it. If there is no voltage on the switching unit: repair the wiring or replace it. If the driver's seat fore/aft adjustment motor -V28- or the front passenger's seat fore/aft adjustment motor -V31- is faulty: Replace the seat base frame. If the control unit for seat and steering column adjustment with memory function -J136- or the control unit for seat and steering column adjustment with memory function -J521- is faulty: Replace the control unit.
Removing the seat if the electric motor for adjusting the longitudinal position of the seat is faulty
Turn on the ignition. Disconnect the battery ground cable with the ignition on. Disconnect the connection module connectors. Connect Airbag adapter -VAS 6281. Remove bolt -1-. Disconnect the seat position sensor -2- with electrical cable from the lower frame of the seat base and place it aside. Disconnect the electrical connector for the front seat belt buckle.
Disconnect the electrical connector from the seat fore/aft adjustment motor. Unscrew the bolt -5-, to do this, first unscrew the lock nut.
Risk of damage to threaded holes or bushings at support points (threaded connection of the upper and lower frame). To remove the bolts listed below, the 2nd mechanic must lightly press the seat back downwards. Unscrew bolts -1,3,4,7-. Using a 2nd mechanic, lift the upper frame of the seat base -2- from the lower frame -6- and remove it from the vehicle.
The illustration shows the seat recess without cushions, upholstery or backrest. Make sure that the bushings -1- are at the support points (threaded connection of the upper and lower frame) -2- were not damaged. It is not possible to replace bushings using workshop equipment. If the bushings are damaged, the corresponding mounting part must be replaced. Remove the accessible seat rail bolts on the console. Remove the faulty seat longitudinal adjustment motor -1- from the bracket -arrow A-. Unscrew the screws -arrows B- and remove the cross member -3- of the seat rails. Unscrew the bolts -arrows C- and remove the bracket -2- for the electric motor for adjusting the longitudinal position of the seat.
Clamp the drive shaft -3- of the electric motor for adjusting the longitudinal position of the seat in a screwdriver for AKM -4- or a drill. Insert the drive shaft into the drive spindle -arrow A- and rotate the seat guide -2- -arrow B- forwards and backwards until the lower seat guide bolt -1- is accessible.
Unscrew the bolt and remove the seat guide. Repeat these operations on the opposite side. Replace the lower seat base frame with the electric motor for longitudinal seat adjustment.
Removal in the event of a faulty control unit for seat and steering column adjustment with memory function
Turn on the ignition. Disconnect the battery ground cable with the ignition on. Disconnect the electrical connector from the seat fore/aft adjustment motor. Connect the electric motor for adjusting the longitudinal position of the seat using an external power source and move the seat forward or backward so that the bolts -1- (4 pieces) became visible.
Remove the screws. Disconnect the connection module connectors. Connect the Airbag adapter -VAS 6281-. Using the help of a second mechanic, remove the front seat from the vehicle. Attach front seat to seat repair holder -VAS 6136-. Rotate the control unit to adjust the position of the seat and steering column with memory function.
Installation
Installation in reverse order: remove the Airbag adapter -VAS 6281 only after installing the front seat. Insert the plugs into the connectors of the connection module in the underbody of the vehicle. Please note that email The connectors must be inserted all the way until they click into place. Connect the battery ground cable with the ignition on.
Threshold side trim
Removing the trim from the threshold side. Removal can be carried out on the installed seat.
1. Bolt. 8 Nm; 2. Clamping pin; 3. Spacer clamp; 4. Lumbar support adjustment switch; 5. Seat position control panel.
Removing the trim from the threshold side
Move the front seat all the way up. Unscrew the bolt -5- and remove the clamp -4- of the trim. Remove trim -1. from behind the seat -arrow A-. Open the clip -2- to the trim and disconnect the bracket -3-; to do this, carefully pull the trim off the front seat.
Release the fasteners -arrow- connecting the storage pocket -2- and the sill-side trim -1-. Detach the trim from the bracket and remove it forward.
Disconnect plug connector -4- from lumbar support adjustment switch -3-. Disconnect plug connectors -1, 5- from seat position control panel -2-.
Remove the trim from the threshold side.
Installation
Installation is in reverse order, taking into account that el. The connectors must be inserted all the way until they click into place. Make sure that the trim is correctly secured on the threshold side with the clamp and that the clips are closed. Make sure that the wires are located as close as possible to the plug connectors -1,4,5-.
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