My Porsche 911 (996) key fob has stopped working, I have replaced the battery, led blinks strong.

Insert key into door barrel or ignition lock and turn key, whilst doing this press the unlock/lock button, the led on the dash should flash to indicate this has initialised the key to the car, then remove key and test operation of remote. If this fails then a new remote plus coding to the car by your dealership is needed

Na 5 dagen niet gebruiken gaat hij in een spaarmodus !

Radio remote control in hand-held transmitter does not function.

The radio remote control function is unavailable under the following five circumstances:

1. Empty battery in hand-held transmitter
Battery replacement restores the full functionality
without additional measures. The same applies
in the case of an empty vehicle battery.

2. Radio transmitter outside lock-in range
If the transmitter is operated more than 256
times without reaching the associated receiver
(e.g. vehicle outside range or vehicle battery disconnected),
the vehicle will not recognise the
radio transmitter the next time it is operated. If
the number of operations is less than 1024, it
is possible to perform re-synchronisation as described
below:

- Switch on ignition with key and valid transponder.
- Switch off ignition.
- Remove ignition key from steering lock.
- Operate transmitter within 6 seconds after
the key has been removed.

The lock-in range has now been reset to zero
(as is the case with every recognised transmitter
operation).

3. Atmospheric interference or interfering
transmitters
The possibility of temporary interference by interference
sources, and thus lack of function, cannot
be ruled out due to the many small users
operating on the radio frequencies permissible
for the automotive application. The 996 model
can be unlocked with the vehicle key via the
door lock in the event of interference. Unlike
with the 993, this does not affect the immobilizer.
Deactivation of the immobilizer is performed
via the transponder in the key head as
soon as the key is turned in the steering lock.

4. Energy-saving mode active
In order to keep "breakdowns" resulting from an
empty battery to a minimum, the radio receiver,
which draws a high closed-circuit current, is
switched off in the alarm system control module
after a certain time in addition to switch-off of
the other loads.

The radio receiver is switched off if the ignition
is not switched on again within five days
(120 h OFF time).

The radio receiver is switched off independently
of the locking condition of the
vehicle.

A locked vehicle can be unlocked with the
vehicle key. (This does not reactivate the
radio receiver).

In the case of vehicles for the English and
Belgian markets, it must be borne in mind
that the alarm system is not switched off. In
order to avoid triggering the alarm, the
vehicle key with valid transponder must be
turned in the steering lock within the vehicle entering
delay of 10 seconds.
{This also applies if the vehicle was parked
unlocked for longer than five days due to the
"passive arming" function (automatic arming
of the alarm system 30 seconds after the
vehicle is left with the ignition key removed;
the central locking system is not activated in
this case) that is in use for the Belgian
market.)

If the radio receiver has been deactivated, it
can be reactivated only by switching on the
ignition again.

The switch-off time is reset if the ignition is
switched on within five days, i.e. the system
does not enter energy-saving mode.

If a valid radio command is recognised within
the idle period (terminal 15 off), the switch-off
time is not reset.

5. Fault in hand-held transmitter or vehicle
If the LED on the hand-held transmitter stays
dark when the transmitter is operated, this is an
indication of either an empty battery or a faulty
hand-heldtr ansmitter. Radiot ransmission is OK
if the LED on the transmitter flashes when the
transmitter is operated and the alarm readiness
lamp on the dashboard flashes rapidly. If the
alarm readiness light stays dark and points
1 to 4 can be excluded, the problem is a
system fault of the vehicle.