Yo entiendo que lo que haces, es que puedas "desbloquearlo" con el mando a distancia (que antes habia dejado de funcionar).

Es decir, por efecto del barrido de frecuencias, la alarma bloquea el vehiculo, y se queda como bloqueada. Entonces, no reconoce nuestro propio mando... Si hacemos este procedimiento, digamos que reseteamos la alarma, de modo que vuelva a reconocer nuestro mando y así podremos desactivarla 😉

¿Es así LRsoler??? 😕

Buenas , Lr Soler .
Una mañana fui al carref y novato en inmovilizador , el caso es
que no iva y encima lo abri y salto la alarma .

Ahora ya se que con empujarlo un poco y cambiarlo de sitio , funciona ..

exactamente lo que dice mariano se ve que no me he expreado bién...vuelve a actuar el mando y se desbloquea el inmovilizador..en cuanto a moverlo de sitio yo lo hice tres manzanas con el consiguiente esfurzo que es mover el def.pero ni aún así...pido disculpas si no me he expreado bien...saludos

A mi despues de un vadeo en el que se me mojo el Cuadro de relojes, al parar para tomar algo en un bar, luego el mando no abria. Al abrir con la llave la alarma no sonó, pero el coche no se ponia en marcha.

Tuve que llevar a cabo el procedimiento de emergencia que viene en el manual, consiste en meter la llave en el contacto, girar varias veces, abrir la puerta de conductor y luego cerrarla otras tantan veces, un circo!, y al final arrancó.

El receptor del inmovilizador y del cierre centralizado esta debajo de los relojes.

Hasta pronto.

vuelve a actuar el mando y se desbloquea el inmovilizador..

Ah.!!! No había entendido.

Creía que decias que era para poder abrir con la llave y desarmar el inmovilizador.

Un saludo.

iVax

Ahi les va el manual para que vuelva a funcionar todo normalmente.
Saludos

VEHICLE IMMOBILISATION AND ALARM SYSTEM
A sophisticated engine immobilisation and anti-theft
alarm system is offered on the Land Rover Defender Tdi vehicle range, which incorporates the
following features:
Perimeter protection
This part of the alarm system protects side doors,
bonnet and rear door against unauthorised entry -
alarm sounding if any one of these apertures is
opened without alarm first being disarmed.
Interior protection
Also known as volumetric protection, this part of the
system protects space inside the vehicle. Once
armed, the alarm will sound if a door is opened, or if
movement is detected inside the vehicle.
Engine immobilisation
The engine is immobilised electronically whenever the
alarm system is armed. Even if the alarm has not
been armed, engine immobilisation will occur
automatically thirty seconds after the driver’s door is
opened, or five minutes after the starter switch is
turned to position ’0’.
ALARM SYSTEM COMPONENTS
Electronic control unit (ECU)
The ECU is the alarm system brain and controls all
vehicle immobilisation and alarm functions. It
responds to the inputs received, by supplying suitable
outputs to indicate status of the alarm system or
activating relevant warning devices. unit is located
under fascia behind instrument binnacle.
Handset and key
The handset is the primary source of control for the
alarm system i.e. it arms and disarms the alarm
components. The key can be used to override engine
immoblisation if the handset is lost or fails to operate,
see Engine immobilisation override.
The handset battery should last for approximately
three years dependent upon use. The following
symptoms will be noticed when the battery requires
replacement:
1. The handset will only work every other operation
while disarming.
2. The direction indicator lamps will not flash when
the alarm is disarmed.
For battery replacement procedure, see Handset
Battery.
Passive coil
The passive coil is fitted on the starter switch and
activates a receiving coil in the handset, causing it to
automatically transmit a remobilisation signal to the
ECU.
Aerial
The aerial is integral within the alarm system harness
and supplies the ECU with the signal received from
handset.
Immobilisation spider
The immobilisation spider provides an interface
between ECU and immobilised areas of the vehicle.
This is installed in a sealed (safe) box inside the
vehicle battery box.
Digital diesel shut-off valve - 97 MY
When fitted, the digital diesel shut-off valve
immobilises the fuel injection pump by preventing
power reaching the fuel shut-off solenoid, See
Immobilisation and alarm system circuit diagram -
with DDS .
ELECTRICAL
DESCRIPTION AND OPERATION 3
Door and bonnet switches
Perimetric protection for the vehicle is provided by
ECU inputs connected to the starter switch, bonnet
switch and door switches.
Ultrasonic sensor
The ultrasonic sensor operates by emitting an air
pressure carrier wave which is subsequently received
by the sensor as it bounces back from objects inside
the vehicle. Once armed, the alarm will sound if wave
is disturbed by a door opening, or if movement is
detected inside the vehicle.
When the volumetric sensor is activated it monitors
movement within the vehicle for 15 seconds before
detecting and responding to intrusions. If the sensor
detects movement it delays arming until a quiet period
has lapsed; if continuous movement is detected, the
alarm will not arm volumetrically.
NOTE: Interior protection will not operate
until 15 seconds after alarm is set.
The ultrasonic sensor is positioned in a different
location, according to vehicle type, as follows:
�� 90/110 Station Wagon - RH cantrail trim
�� 90/110 Pick-up - On headlining, between interior
lamp and rear view mirror
�� 130 Crewcab - On headlining above RH door
Alarm sounder
Two types of alarm sounder can be fitted, one with a
battery back-up facility and or without battery back-up,
both providing an audible warning whenever the alarm
is triggered. The vehicle horn will also operate if the
alarm sounds.
The alarm sounder is fitted to LH inner front wing in
the engine compartment.
NOTE: Disconnecting the battery on
vehicles fitted with the battery backed-up
facility will result in the alarm sounding, if
correct procedure has not been followed.
Engine immobilisation warning light
The engine immobilisation warning light is located on
the instrument panel, and provides a visual indication
that the engine is immobilised.
Anti-theft alarm indicator light
The anti-theft alarm indicator light is located on the
instrument panel, between the fuel and coolant
temperature indicators, and provides a visual
indication of the alarm/ immobiliser status.
86 ELECTRICAL
4 DESCRIPTION AND OPERATION
ALARM SYSTEM COMPONENT LOCATION
COMPONENT LOCATION
1. Electronic control unit (ECU) Under dash, LH and RH drive
2. Anti-theft alarm indicator light Instrument panel
3. Engine immobilisation warning light Instrument panel
4. Immobilisation spider* Inside vehicle battery box
5. Passive coil Over starter switch barrel
6. Bonnet switch Engine compartment, LH and RH drive
7. Door switches
8. Ultrasonic sensor Varies according to vehicle type
9. Handset and key
10. Alarm sounder (without battery back-up) LH inner front wing
11. Alarm sounder (with battery back-up) LH inner front wing
* Replaced in some markets by a digital diesel shut-off valve (DDS), secured directly to fuel shut-off solenoid on
injection pump.
ELECTRICAL
DESCRIPTION AND OPERATION 5
ALARM SYSTEM OPERATION
Arming alarm
To arm the alarm, aim handset at vehicle and press
the RH button (Padlock symbol). Provided all doors
and or apertures are closed, the direction indicator
lamps will flash three times to confirm that the alarm is
armed. All security features previously described will
be active.
Once armed, the alarm will sound if a door or the
bonnet is opened, or if movement is detected inside
the vehicle.
Disarming alarm
Within range of the vehicle, briefly press the LH
(Plain) button on the handset; the direction indicator
lamps will flash once to indicate that the alarm has
been disarmed and the engine re-mobilised.
NOTE: In some territories, the interior
lamps will illuminate when the alarm is
disarmed.
If the direction indicators fail to flash when the
alarm is armed:
This indicates that a door or the bonnet is not fully
closed, in which case the alarm will be partially armed
and engine immobilised, but interior protection will not
be active.
Once the open door or bonnet is closed, the direction
indicators will flash three times and the alarm will fully
arm as described previously.
If the alarm sounds:
The vehicle horn and alarm sounder will operate
continuously for 30 seconds when the alarm is
triggered. The horn and alarm sounder can be
triggered up to three times.
To silence the alarm, press either handset button. If
the handset is inoperative, the alarm can only be
disarmed by entering the emergency key access
code, see Engine immobilisation override.
Anti-theft alarm indicator light
A RED indicator light on the instrument panel
indicates the status of the alarm system. When the
alarm is armed successfully, the light flashes rapidly.
After 10 seconds, the light adjusts to a slower
frequency and continues flashing as an anti-theft
deterrent.
If the light fails to illuminate during the rapid flash
phase, this indicates a ’mislock’ (door or the bonnet
not fully closed or key in starter switch). If this occurs,
the indicator light will still flash at slower frequency as
an anti-theft deterrent.
The indicator light will illuminate continuously under
the following conditions:
1. Alarm system armed and immobilised with
ignition ’on’ or driver’s door open.
2. Engine immobilised with ignition ’on’ or driver’s
door open.
Interior protection
Interior protection is activated automatically when the
alarm system is armed; twin sensors inside the
vehicle monitor interior space and will activate the
alarm if an intrusion is detected.
However, if passengers or animals are to be left inside
the vehicle, or if a window or sunroof is to be left
open, the alarm must be armed with the interior
protection DISABLED as follows:
To disable interior protection:
1. Open the driver’s door.
2. Use the handset to arm the alarm in normal way.
3. Close the driver’s door (the direction indicator
lamps will flash three times and the anti-theft
indicator light commences flashing rapidly). The
alarm system is now armed with the interior
protection disabled.
NOTE: Interior protection will not operate
until 15 seconds after the alarm is set.
86 ELECTRICAL
6 DESCRIPTION AND OPERATION
ENGINE IMMOBILISATION
Engine immobilisation is an important aspect of the
vehicle’s security system, and occurs automatically
whenever the alarm system is armed.
The system also includes a feature known as ’passive
immobilisation’, which is designed to safeguard
thevehicle from theft should the driver forget to arm
the alarm.
Passive immobilisation occurs automatically as
follows:
�� Thirty seconds after the starter switch has been
turned off and the driver’s door opened.
�� Five minutes after thestarter switch is turned off or
the alarm system is disarmed.
If the engine has immobilised passively,
re-mobilisation will occur when the starter switch is
turned to position ’II’, provided the handset is on the
same ring as key and in close proximity to the switch.
ALWAYS keep the handset on the same ring as the
key.
NEVER attach both handsets to the same key ring.
Any attempt to start the engine while it is immobilised
will cause the engine immobilisation warning light to
flash.
Engine immobilisation override
If the handset is lost or fails to operate, the engine
immobilisation can be overridden by using the starter
key to enter the four digit emergency access code.
The procedure for entering the code is described after
the following note:
NOTE: If the handset is lost or inoperative,
it is impossible to disarm the alarm. As
soon as the door is opened, the alarm will
sound (continuously for up to three 30 second
periods), and continue while the code is being
entered.
1. With the driver’s door closed, insert the key into
the starter switch.
2. Turn the switch to position ’II’ the required
number of times to enter first digit of code (if first
digit is 4, turn key to position ’II’ and then back to
’0’ four times.
3. Open the driver’s door (to enter first digit) and
then close the door again.
4. Turn the starter switch to position ’II’ and back to
’0’ the required number of times to enter
SECOND digit of code.
5. Open the driver’s door (to enter second digit)
and then close the door again.
6. Turn the starter switch to position ’II’ and back to
’0’ the required number of times to enter THIRD
digit of code.
7. Open the driver’s door (to enter third digit) and
then close door again.
8. Turn the starter switch to position ’II’ and back to
’0’ the required number of times to enter
FOURTH digit of code.
9. Finally, open and close the driver’s door. If the
code has been entered correctly, the anti-theft
indicator light will extinguish, the engine can be
started and the alarm will disarm.
If an incorrect code has been entered:
If the code is entered incorrectly, the anti-theft
indicator light will continue to illuminate and the
engine will fail to start. Before entering the code again,
turn the starter switch to position ’II’, hold in this
position for 5 seconds and then switch off.
After three failed attempts, the security system
invokes a delay period of thirty minutes during which
the system will not accept any further codes.
ELECTRICAL
DESCRIPTION AND OPERATION 7
ALARM SYSTEM FUSES
When the vehicle immobilisation and alarm system is
fitted, three fuses are used to protect the circuit:
�� Alarm system 15 amp fuse, main harness, located
behind instrument binnacle.
�� Alarm sounder 20 amp fuse No.10, located in main
fuse box.
�� Alarm system 5 amp fuse No.20, located in main
fuse box.
The main fuse box is positioned in the centre of the
fascia, in front of the main gear lever. A label in the
fuse box cover shows the circuits protected, the fuse
rating and their locations. They are also listed below.

La Firgen!!!

Vale,vale.Prefiero lo de desconectar la bateria.

A mi me ha ocurrido hace poco lo siguiente en el Defender 90 Td5... dejo el coche tranquilamente 2 semanitas parado, por lo que desconecto la batería (con un desconectador), dejo las llaves puestas en el contacto y me voy. a los 15 días voy a poner el coche en marcha, pongo el conectador, luces y todo esto bien y giro la llave en el contacto... lucecita del motor que parpadea y nada... unos bocinazos avisando que está vacilón y que sin más va a dar problemas. No hubo manera de ponerlo en marcha ese día. La alarma no hacía mención de funcionar. Me olí que era la pila del mando (que la había cambiado hacía tan solo unos meses). Al día siguiente volví con el otro mando, le di y funcionó...hmmmm... menudo mosqueo... les cambié las pilas a los mandos y voilá! funcionaba el "roto" y el "bueno" no... por algún motivo se ha descargado la pila. De cualquier forma una cosa está clara. Una vez que el inmovilizador detecta un error y no deja al coche arrancar, luego en mi coche o desconectas la batería (suerte del desconectador) o no te funciona ni con otro mando ni con otra pila ni nada. Ahora como esto me ha pasado esta semana lo tengo en periodo de análisis... no me la vaya a jugar en una situación más comprometida.

Saludos a todos.

Hola.
Vaya, vaya, me parece que no voy a vender el 90 Tdi 200 y lo voy a guardar como una joya, x que cada dia veo + claro que x mucho que el Td5 corra un poco +, tambien da + problemas.
Pues nada, bienvenidos al mundo de la electronica 😉
Rafagas.

otro mas que ha caido en un edificio oficial con barredor de ondas, ni mando ni codigo manual, ni leches, al taller en grua y al llegar funciona el coche, pero no el mando (abrir y cerrar puertas)

un saludo

Sergio, no dejes las llaves (el mando) en el coche.
cuando tu reconectas el cortacorriente no le gusta nada al sistema que este el mando cerca del contacto.
Lo correcto es reconectar la bateria, esperar a que se enciendan las luces del techo (unos 20 segundos) y luego ya si puedes poner la llave y veras como arranca a la 1era.
Jacques