2X00IN Work instructions after disconnecting the battery
WM 2X00IN Work instructions after disconnecting the battery
Technical values
Connecting and disconnecting battery
WARNING
Static battery charge
- Battery can explode
- Electrical discharges
-> Do not rub the battery with a dry cloth.
Information
Switch off all loads and remove the ignition key.
- Do not disconnect the battery while the engine is running.
- Disconnect and reconnect battery with extreme caution.
- Do not rub the battery with a dry cloth.
Information
The battery is located in the luggage compartment under the storage floor.
1. Open the luggage compartment floor.
2. Remove tool kit tray.
3. Disconnect ground strap on the battery:
4. Risk of short circuit! Disconnect the negative cable -1- on the battery.
Removing terminal clamps
5. Route or isolate the ground strap so that all contact with a ground carrier (e.g. body, battery terminal) is avoided.
6. Connect the battery
6.1. Connect the negative cable -1- to the battery terminal and secure with the fastening nut.
Attaching terminal clamps
7. The rear lid must be closed manually on vehicles with a Power Lift Gate (electric rear lid). Then open the rear lid with the tip switch. The rear lid must open electrically.
8. Insert tool kit tray and fold down the luggage compartment tray.
Effect of disconnection or total discharge of battery on electrical systems in the vehicle and the precautions to be taken
Information
Control unit memories
Values and faults stored in the control units can be deleted if the battery is disconnected or completely discharged.
- If possible, all fault memories should be checked and, if necessary, printed out before the battery is disconnected.
Information
Supply voltage fault entry
The entry "supply voltage" may be stored in various control units if the battery has been completely discharged.
- Delete the "supply voltage" entry from the control units in question.
Information
Ready status
In some countries (presently the U.S.A. and Canada), after disconnecting the battery, it is necessary to reach the Ready status by a test drive and/or by using the Porsche System Tester DME control module menu). If in doubt about this, contact the relevant importer.
Information
2470 DME control module
With all DME systems, the engine must run for several minutes before the engine control module can relearn the idle speed and mixture adaptation values!
After disconnection of the power supply, the idle speed might change or fluctuate briefly until the throttle valve adjusting unit has been readapted.
The mixture adaptation is also lost.
After the battery is connected:
With the DME, it is necessary to carry out a learning and adaptation routine as described below:
- Switch ignition on for 30 seconds without starting the engine.
- Do not actuate accelerator pedal.
This completes the adaptation of the throttle valve adjusting unit.
Information
Tyre pressure monitoring system
When the battery is disconnected and connected, the tyre pressure is first displayed as "- - - ".
- Once the battery has been disconnected and work is complete, the vehicle must be driven for a short distance.
The actual pressures will then be displayed again.
Information
4560 Steering angle sensor
The steering angle sensor must be re-initialised when the battery is disconnected and connected.
- Turn wheels to straight-ahead position.
- Switch ignition off and then on again twice.
- Start engine.
- From the straight-ahead position, turn steering wheel approx. 20° to the right, past the straight-ahead position.
- Drive the vehicle straight ahead for at least one second at a speed above 4 km/h (2.5 mph).
The steering angle sensor segment is recognised again in this process.
Once the sensor has been successfully initialised, the fault code that is stored in the fault memory is documented using the fault deletion counter.
The fault memory erases itself automatically.
The PSM indicator light in the instrument cluster goes out.
Information
6014 Motor for sunroof
The limit positions of the sunroof are deleted from the control unit when the battery is disconnected and connected.
- Switch on ignition.
- Press the sunroof button for several seconds in direction of travel.
- After approx. 10 seconds, the sunroof performs an automatic standardisation process and resets all positions.
- Keep the button pressed during the standardisation process.
Afterwards, the sunroof is standardised correctly.
Information
6452 Power windows
The limit positions of the power windows are deleted from the control unit when the battery is disconnected and connected.
Perform the following procedure for all power windows:
- Pull rocker switch and fully close window once.
- Pull rocker switch once more.
The upper end position of the window is stored.
- Press rocker switch and fully open window once.
- Press rocker switch once more.
The lower end position of the window is stored.
Information
4815 Electrical steering column adjustment (ELVS)
The electrical steering column adjustment end positions (ELVS) are deleted when the battery is disconnected and connected.
The following buttons must be pressed in sequence in order to re-initialise electrical steering column adjustment.
- Press the extend button three times (extend towards the driver).
- Press the retract button once.
- Press the extend button once (towards the driver).
- Press the up button once.
- Press the down button once.
Once the buttons have been pressed correctly, the steering column automatically moves all axles and stops at the centre position (only works when the vehicle is stationary).
Test drive after disconnecting battery
Information
Depending on the vehicle equipment fitted, all these work steps are carried out during the test drive.
Read out the fault memories of all control units after the test drive.
- If there is a fault present, check to see if the fault was caused by an undervoltage.
- If faults were caused by an undervoltage (or CAN timeout error), erase the fault memory, perform another test drive and read out the fault memory.
- If faults were not caused by an undervoltage, correct the faults in accordance with GFF (Guided Fault Finding).