Shift Interlock Solenoid: Testing and Inspection

Selector Mechanism and Ignition Key Withdrawal Lock, Checking

Proceed as follows:

• If selector lever is in S, D, R or Tiptronic position, starter cannot be operated.

• If vehicle is rolling faster than 5 km/h and selector lever is shifted to N, the selector lever lock solenoid must not engage and block selector lever. Selector lever can be shifted into driving gear.

• If vehicle is rolling at speeds less than 5 km/h (almost still) and selector lever is shifted to N, the selector lever lock solenoid may only engage after a second. The selector lever can only be shifted out of N when brake pedal is pressed.

Selector lever in P position, ignition switched off:

The ignition key can be removed.

Selector lever out of P position, ignition switched off:

The ignition key cannot be removed.

Selector lever in position P, button on selector lever pressed and ignition switched on:

• Brake pedal not pressed:

With button pressed, selector lever is locked and cannot be shifted out of position P. Shift lock solenoid blocks selector lever.

• Brake pedal pressed:

The selector lever lock solenoid releases selector lever, a driving gear can be engaged. Shift selector lever slowly through from P through R, N, D, S; while doing this check whether selector lever position in instrument cluster matches the selector lever position.

Selector lever in position n, button on selector lever pressed and ignition switched on:

• Brake pedal not pressed:

•

Selector lever is locked and cannot be shifted out of N position. Shift lock solenoid blocks selector lever.

• Brake pedal pressed:

The selector lever lock solenoid releases selector lever, a driving gear can be engaged.

• If the brake pedal is pressed, it is possible to shift from N to D without pressing button on selector lever.

• If shifting from N to R position is desired, selector lever button must also be pressed.

Selector lever in position D, ignition switched on:

Selector lever is locked and cannot be shifted from position D position to S.

• Push button on selector lever:

The selector lever is released and can be shifted from D position to S.

Selector lever in D position, ignition and lights switched on:

• Move selector lever into Tiptronic gate:

The illumination of D symbol in selector lever display must go out, and + and - symbols must light up.

When shifting selector lever into Tiptronic gate, the Transmission Range (TR) Display in the instrument cluster must change from PRNDS to 654321.

• Shift selector lever in Tiptronic gate to + and -:

When shifting selector lever to + or -, the 654321 display in the instrument cluster must move up/down one gear (display changes).

- If selector mechanism or ignition key withdrawal lock does not function as described, connect Vehicle Diagnosis, Testing and Information System (VAS 5051B).

- Check DTC memory - complete system, if necessary, determine malfunction in guided fault finding and correct