97561900 Removing and installing wire harness for backrest (front seat)
WM 975619 Removing and installing wire harness for backrest (front seat)
Preliminary work
1. Remove cushion carrier for front backrest. -> 722419 Removing and installing cushion carrier for front backrest - section on "Removing" 722419 Removing and installing cushion carrier for front backrest
2. Remove cover for backrest. -> 722619 Removing and installing cover for backrest - section on "Removing" 722619 Removing and installing cover for backrest
Information
Only for vehicles with adaptive sports seats.
3. Remove air cushion for backrest. -> 721719 Removing and installing air cushion for backrest - section on "Removing" 72171900 Removing and installing air cushion for backrest
Removing wire harness for backrest (front seat)
Removing support for left backrest side part
Installation position of motor for lumbar support
1. Unscrew the four fastening screws -1- and remove support for backrest side part -2-.
Removing support for left backrest side part
Removing backrest side support
Installation position of motor for backrest adjustment
1. Unscrew the four fastening screws -1- and remove backrest side support -2-.
Removing backrest side support
Taking off foam part
Installation position of control valve for lumbar support adjustment
1. Remove foam part -1- at the headrest.
Taking off foam part
Removing wire harness for backrest (front seat)
Information
The description covers a wire harness for maximum equipment. Some plug connections will not be present if the vehicle has less equipment.
Installation position of wire harness for backrest (front seat)
Overview of plugs for wire harness for backrest
Overview of plugs for wire harness for backrest
1. Release and pull off connector -1- on control valve for lumbar support adjustment. -> 723319 Removing and installing control valve for lumbar support adjustment - section on "Removing" 72331900 Removing and installing control valve for lumbar support adjustment
2. Release and pull off connectors -2 and 3- on sensors for lumbar support. -> 723419 Removing and installing lumbar support - section on "Removing" 72341900 Removing and installing lumbar support
3. Release and pull off connector -4- on motor for backrest adjustment. -> 728919 Removing and installing motor for backrest adjustment - section on "Removing" 72891900 Removing and installing motor for backrest adjustment
4. Release and disconnect plug connection -5- on motor for lumbar support adjustment. -> 723619 Motor for lumbar support - section on "Removing" 72361900 Removing and installing motor for lumbar support
5. Release and disconnect plug connection -6- on air cushion switch. -> 728619 Removing and installing switch for seat adjustment - section on "Removing" 72861900 Removing and installing switch for seat adjustment
6. Release and pull off connector -7- on control unit for memory seat adjustment. -> 729319 Removing and installing control unit for memory seat adjustment - section on "Removing" 72931900 Removing and installing control unit for memory seat adjustment
7. Release and disconnect plug connection -8- on air cushion motor. -> 723919 Removing and installing air cushion motor - section on "Removing" 72391901 Removing and installing air cushion motor
8. Release and disconnect connector -9- on control valve for air cushion. -> 723819 Removing and installing air cushion control valve - section on "Removing" 72381901 Removing and installing air cushion control valve
9. Remove tie-wrap -12- and remove wire harness for backrest -A-.
Information
For standard vehicle equipment, the wire harness for airbags is incorporated into the wire harness for the backrest.
10. Remove connector -11- on central plug. -> 692419 Removing and installing front belt lock - section on "Removing" 692419 Removing and installing front belt lock (air-conditioned comfort seat)
11. Remove tie-wrap -12- and remove wire harness for airbag -B-.
Installing wire harness for backrest (front seat)
Overview of plugs for wire harness for backrest
Overview of plugs for wire harness for backrest
1. Route wire harness for airbag -B- and secure with new tie-wraps -12-.
2. Fit connector -11- on central plug. -> 692419 Removing and installing front belt lock - section on "Installing" 692419 Removing and installing front belt lock (air-conditioned comfort seat)
3. Route wire harness for backrest -A- and secure with new tie-wraps -12-.
4. Push connector -9- onto air cushion control valve until it engages firmly. -> 723819 Removing and installing air cushion control valve - section on "Installing" 72381901 Removing and installing air cushion control valve
5. Push plug connection -8- onto motor for air cushion until it engages firmly. -> 723919 Removing and installing air cushion motor - section on "Installing" 72391901 Removing and installing air cushion motor
6. Attach connector -7- to control unit for memory seat adjustment until it engages firmly. -> 729319 Removing and installing control unit for memory seat adjustment - section on "Installing" 72931900 Removing and installing control unit for memory seat adjustment
7. Push plug connection -6- onto air cushion switch until it engages firmly. -> 728619 Removing and installing switch for seat adjustment - section on "Installing" 72861900 Removing and installing switch for seat adjustment
8. Connect plug connection -5- on motor for lumbar support adjustment until it engages firmly. -> 723619 Motor for lumbar support - section on "Installing" 72361900 Removing and installing motor for lumbar support
9. Attach connector -4- to motor for backrest adjustment until it engages firmly. -> 728919 Removing and installing motor for backrest adjustment - section on "Installing" 72891900 Removing and installing motor for backrest adjustment
10. Push connectors -2 and 3- onto sensors for lumbar support until they click into place. -> 723419 Removing and installing lumbar support - section on "Installing" 72341900 Removing and installing lumbar support
11. Push connector -1- onto control valve for lumbar support adjustment until it engages firmly. -> 723319 Removing and installing control valve for lumbar adjustment - section on "Installing" 72331900 Removing and installing control valve for lumbar support adjustment
Fitting foam part
Information
Observe the installation position of the hoses!
Make sure that the hoses are not pinched. Insert hoses exactly into the cut-outs on the foam part.
1. Fit foam part -1- at the headrest.
Fitting foam part
Installing backrest side support
Information
Observe hose routing!
In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.
1. Fit backrest side support -2- and screw down with the four fastening screws -1-.
Installing backrest side support
Installing support for left backrest side part
Information
Observe hose routing!
In vehicles with lumbar support, make sure the hoses are routed correctly in the area of the backrest side support.
1. Insert support for backrest side part -2- and secure with the four fastening screws -1-.
Installing support for left backrest side part
2. Route wire harness for airbag -1- as shown behind the backrest side part support -2-.
Routing wire harness for airbag
Subsequent work
1. Install air cushion for backrest. -> 721719 Removing and installing air cushion for backrest - section on "Installing" 72171900 Removing and installing air cushion for backrest
2. Install cover for left backrest. -> 722619 Removing and installing cover for backrest - section on "Installing" 722619 Removing and installing cover for backrest
3. Install cushion carrier for front backrest. -> 722419 Removing and installing cushion carrier for front backrest - section on "Installing" 722419 Removing and installing cushion carrier for front backrest