Collision Avoidance and Parking Assist Systems: Application and ID

ParkAssist

Introduction

General instructions/safety instructions

WARNING:
Danger of injury and damage to the vehicle when the vehicle is in motion.
- Never step in front of or behind a vehicle unless it is in gear and the parking brake is applied to prevent it from rolling.
- The system is subject to physical detection limits and does not free the driver from his/her responsibility to be careful.
- The system cannot detect short, thin and small obstacles and persons who are lying on the ground. It also cannot detect surfaces with unfavourable reflective characteristics, e.g. snow or glass.

WARNING:
Danger of injury and damage due to unusual vehicle handling when plugs or components are disconnected.
- Never disconnect plugs when the vehicle is in motion or drive the vehicle with plugs disconnected.
- Drive only with all parts fully installed and connected.

NOTE:
- The rear ParkAssist system is inoperable when a trailer is hitched (plug with load in the trailer socket).
- A warning tone is issued if the system is faulty. This tone differs from the continuous tone that is issued when an obstacle is detected.
- External weather conditions such as ice, snow or dirt can also impair the functioning of the sensors and result in a fault being stored.

CAUTION:
Danger of damage due to improper handling of batteries and control unit plug connections.
- Never disconnect battery with engine running.
- Never start engine if battery terminal clamps are not connected securely
- Never pull off or push on plug connections for the control units or other electronic components when the ignition is switched on
- Always disconnect the negative terminal of the battery and pull off all plug connections to the vehicle electrical system control unit when carrying out welding work on the vehicle

Troubleshooting procedure
If the fault is currently 'not present', please check the following:
- Diagnostic conditions are met
- All plug connections and ground points of the affected current path are OK.
- Set all wiring harnesses of the affected current path to a state that corresponds to driving by pulling and shaking them.

Diagnostic conditions

NOTE:
Important: Always connect a suitable battery charging device to the vehicle electrical system battery before starting diagnosis. All unnecessary loads must also be switched off.

NOTE:
The fault can only be identified it the requirements listed under Diagnostic conditions are met For this reason, the specified procedure must be observed after a fault is repaired:
1. Erase fault memory
2. Satisfy the requirements listed under 'Diagnostic conditions'.
3. Read out fault memory again

Possible causes of fault

NOTE: The possible causes of fault that are responsible for the fault are listed here. Please note that in certain circumstances further faults can be stored in the fault memory after troubleshooting (e.g. it plugs are disconnected). After carrying out repairs, read out the fault memory of all control units and erase any faults.

Diagnosis/troubleshooting

NOTE: The fault memory Info key [F8] on Porsche System Tester II No.9588 can be used to access the extended fault memory. The following information can be displayed:

Fault type
The following fault types are possible:
- no display
- upper limit value exceeded
- lower limit value not reached
- mechanical fault
- no signal/communication
- no or incorrect basic setting/adaptation
- Short circuit to B+
- Short circuit to ground
- implausible signal
- open circuit/short circuit to ground
- open circuit/short circuit to B+
- Open circuit
- electrical fault in electric circuit
- please read out fault memory
- faulty
- cannot be checked now

Fault status
The following status types are possible:
- present
- not present

1. Erase fault memory
2. Satisfy the requirements listed under 'Diagnostic conditions'.
3. Read out fault memory again