911 Turbo Cabriolet (996) F6-3.6L Turbo (2004)
Battery: Service and Repair
Work Instructions After Disconnecting the Battery
Work Instructions After Disconnecting The Battery
Effect of disconnection or total discharge of the battery on electrical systems in the vehicle, subsequent measures
INFORMATION:
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In order to avoid triggering the alarm siren (installed on right next to the battery) of vehicles with M 536, the battery must be disconnected with the
ignition on.
-
All loads must be switched off beforehand.
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Never disconnect battery with engine running.
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Never start engine without securely connected battery.
Do not use a boost charger to start the engine.
-
Whenever possible, use jump leads with overvoltage protection.
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Always disconnect both battery terminals before carrying out welding work on the vehicle.
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Wiring harness plugs of control modules or other electronic components must be connected or disconnected with the ignition off. Exception:
vehicles with the additional equipment M 536 (alarm siren with tilt sensor).
Control module memories
Problem
Remedy
Values and faults stored in the control
If possible, all fault memories should
modules can be deleted if the battery
be checked and, if necessary, printed
is disconnected or completely discharged.
out before the battery is disconnected.
Supply voltage fault entry
Problem
Remedy
The entry "supply voltage" could
Delete the "supply voltage" entry from
be stored in various control modules
the control modules in question.
if the battery has been completely
discharged.
Test drive after connecting the battery
INFORMATION: The fault memories of all vehicle control modules should be read out again after the test drive.
2470 DME control module
INFORMATION: 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.
Problem
Remedy
- After disconnection of the power
After the battery is connected.
supply, the idle speed might change
With the DME ME 7.8, it is necessary
or fluctuate briefly until the throttle
to carry out a learning and adaptation
adjusting unit (ME 7.8) is readapted.
routine as described below:
- The mixture adaptation is also lost.
Switch the ignition on for 1 minute without starting the engine. Do not actuate accelerator pedal.
Switch off ignition for at least 10 seconds.
This completes the adaptation of the throttle adjusting unit.
6452 Power windows
Problem
Remedy
The limit positions of the power windows
Manually close each power window as
are deleted from the control module when
far as it will go, then press the rocker
the battery is disconnected and connected. switch for closing the window again.