Steering Gear: Testing and Inspection

Steering Arm, Measuring Mechanically

Special tools, testers and auxiliary items required

• Locking Pliers (VAS 6199)

- First measure steering arm in "Guided Fault Finding" with the vehicle diagnostic tester.

- Connect the vehicle diagnostic tester and select troubleshooting using "Functions/Component selection".

"Chassis (Repair group 01; 40 - 49)"

"Chassis (Repair group 01; 45 - 47)"

"01 - On Board Diagnostic (OBD) capable systems"

"ABS and ESP brake electronics"

"Electrical Components"

"G 85 steering arm measurement"

If the result of measurement was outside if tolerance, measure steering arm mechanically.

- With vehicles with air suspension, place vehicle on hoist. Refer to => [ Positioning Vehicle on Hoist and Wheels ] Positioning Vehicle on Hoist and Wheels.

- Remove left boot from steering gear.

- Turn steering out of center position toward right as far as stop.

Steering Gear with Steering Arm Boundary






- Measure dimension - a - as shown in illustration.

Dimension - a - must be 144.6 mm.

• If dimension - a - is not achieved, check whether version is same on left and right.

- Remove right boot from steering gear.

- Turn steering toward left as far as stop.

- Measure dimension between steering gear and tie rod/steering arm boundary hex head again.

Dimension - a - must be the same in both measurements.

Steering Gear without Steering Arm Boundary






- Measure dimension - a - as shown in illustration.

Dimension - a - must be 152.6 mm.

• If dimension - a - is not achieved, check whether version is same on left and right.

- Remove right boot from steering gear.

- Turn steering toward left as far as stop.

- Measure dimension between steering gear and tie rod/steering arm boundary hex head again.

Dimension - a - must be the same in both measurements.