Remove/install Hill Start Assist sensor

AR26.19-S-0002P

Remove/install Hill Start Assist sensor

18.02.2020

Transmission

700.780 in model 470, 471

Modification notes

26.11.2018

Method extended

Operation step 7

Shown on model 470 with engine 699 and code ZG3 (Engageable all-wheel drive with transmission ratio)

1

Electrical connector

2

Hill Start Assist sensor

 Caution

Risk of injury to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil

Wear protective gloves, protective clothing and safety glasses.
Do not pour transmission oil into beverage bottles.

AS00.40-Z-0001-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A



Remove

1

Remove center and rear lower engine compartment lining.

AR61.20-S-1105P

2

Remove shift cables from transmission.

AR26.60-S-6626-01P

3

Remove electrical connector (1) from bracket.

4

Release electrical connector(1) and disconnect.

5

Remove Hill Start Assist sensor (2).

6

Remove old screw locking adhesive from thread of Hill Start Assist sensor (2).

When reusing the Hill Start Assist sensor (2).

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A

7

Remove old screw locking adhesive from thread of installation opening of Hill Start Assist sensor (2) in transmission.

Loctite 7063 (400 ml) cleaning spray

*BR00.45-Z-1046-04A



Install

8

Apply screw locking adhesive to thread of Hill Start Assist sensor (2).

Thread locking adhesive, Loctite 241

*BR00.45-Z-1001-02A

9

Screw in Hill Start Assist sensor (2).

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 Commercially available devices/tools
Open end wrench bit, 21 mm

 Hill Start Assist switch at transmission housing

*BA26.40-N-1005-01R

10

Connect electrical connector (1).

11

Mount electrical connector (1) onto holder.

12

Route shift cables and mount onto transmission.

AR26.60-S-6626-01P

Long-life grease

*BR00.45-Z-1001-06A

13

Install center and rear lower engine compartment lining.

AR61.20-S-1105P

 Housing

Number

Designation

Transmission 700.780 in model 470, 471 with engine 699

Transmission 700.780 in model 470 with engine 200

BA26.40-N-1005-01R

Hill Start Assist switch at transmission housing

Nm

28

28

Repair materials

Number

Designation

Order number

BR00.45-Z-1001-02A

Thread locking adhesive, Loctite 241

A 002 989 94 71

BR00.45-Z-1001-06A

Long-life grease

A 000 989 63 51 11

BR00.45-Z-1046-04A

Loctite 7063 (400 ml) cleaning spray

A 001 986 71 71 09