Mercedes-Benz B-Class hatchback 2022 Owner's Manual page 448

Display messages
Anti-theft alarm system
Malfunction
_
2nd seat row, left Not
locked
_
2nd seat row, right Not
locked
_
3rd seat row, left Not
locked
Possible causes/consequences and
Close the tailgate.
#
* The anti-theft alarm system is malfunctioning.
Consult a qualified specialist workshop.
#
* The left-hand seat or the seat backrest in the second row of seats is not engaged.
Fold the corresponding seat backrest back until it engages and push the row of seats back .
#
Make sure that the seat is engaged .
#
* The right-hand seat or the seat backrest in the second row of seats is not engaged.
Fold the corresponding seat backrest back until it engages and push the row of seats back .
#
Make sure that the seat is engaged .
#
* The left-hand seat or the seat backrest in the third row of seats is not engaged.
Fold the corresponding seat backrest back until it engages.
#
Make sure that the seat is engaged.
#
Solutions
M
Display messages and warning/indicator lamps 445