I have a nissan almera 2001.when l switch off the ignition and remove the key the battery light and oil stays on...please help...south africa

run the fault codes and look for cam/crank position sensors.
faulty or loose connections may cause this fault. If you have more than 1 key in the ignition then it has been known that the mass of swinging keys will switch off the ignition
(current recall on all GMC ignition switches for just this reason)

Could be a bad oil level sensor or possibly a wire problem going to the oil level sensor.

if you can get to the starter, give it a whack with a hammer on a rear corner of the bigger cylinder and see if it cranks. if it does, it will need to be replaced or rebuilt.

if everything is working and there is no engine lights on then it may just be the connection on the dash to the wiring or the rev counter has failed and just needs replacing, its usually the connections that go discoloured and loses connection and they just need a clean with some enrycloth. or switch cleaner.

It sounds like you have a short in the horn button wires, causing it to ground out when you try to use it.

Try the following:

"KEY FOB PROGRAMMING
NISSAN
SYSTEM DESCRIPTION
The Central Door locking is controlled by the Multi-Remote Control system which controls
the door locking, door super locking and hazard reminder. When the doors are locked and
unlocked the unit flashes the hazard lights once for lock and twice for unlock.
A maximum of four remote controls are allowed to be programmed.
ALMERA
ALMERA TINO
PRIMERA
MAXIMA
MICRA
SERENA
VANETTE CARGO
TERANO II
Ensure all the doors have been unlocked, either by using a good transponder key or remote
control plip key.
Procedure
1. Turn the ignition switch from Position 0 to ON 6 times within 10 seconds.
2. Then turn ignition switch to OFF position. Leave key in ignition switch.
3. After 2 seconds, the system will enter programming mode and will flash the warning
lights twice.
4. Press and HOLD the unlock button on the Plip.
5. While pressing the unlock button, press the lock button 3 times.
6. Release the unlock button.
7. The warning lights will flash once to indicate successful programming.
8. Repeat procedure 4 to 7 for up to 4 plip key?s.
9. When completed turn ignition ON, and the warning lights will flash 2 times.
10. Remove key, and check all plip key?s for operation.
NOTE : The programming mode will stop when either the ignition is switch ON, 4 plip keys
have been programmed or no input signal either from the switch or plip keys has been received
for 120 seconds."

disconnect the battery negative cable for 5 minutes

I might be a few months too late for you, but someone else may benefit.

Problem is a bit vague...

GOT 2 keys.... 2 new keys or the 2 keys that used to work ?

A locksmith should be able to re-instate keys that previously worked, because the keys should be fine, just the system is confused.

when battery was disconnected, was anything on the steering column serviced ?


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Thank You

Jeff

check the battery in the key control it may be faulty

hello mate.. if it has stopped working you might want to check the battery first.. if you are sure that the battery is fine then consider reprogramming the fob to your car.. here are the steps to follow.. NISSAN

Remote Control Fob Procedures:

The Central Door locking is controlled by the Multi-Remote Control system which controls
the door locking, door super locking and emergency hazard reminders.

When the doors are locked and unlocked the unit flashes the hazard lights once for lock and twice for unlock.

A maximum of four remote controls are allowed to be programmed:

ALMERA
ALMERA TINO
PRIMERA
MAXIMA
MICRA
SERENA
VANETTE CARGO
TERANO II

Ensure all the doors have been unlocked, either by using a good transponder key or remote
control plip key.

Procedure:
1. Turn the ignition switch from Position 0 to ON 6 times within 10 seconds.
2. Next, turn ignition switch to OFF position. Leave key in ignition switch.
3. Wait 2 seconds then the system will enter programming mode and will flash the warning
lights twice.
4. Press and HOLD the unlock button on the Plip.
5. While pressing the unlock button, press the lock button 3 times.
6. Release the unlock button.
7. The warning lights will flash once to indicate successful programming.
8. Repeat procedure 4 to 7 for up to 4 plip key's.
9. When completed turn ignition ON, and the warning lights will flash 2 times.
10. Remove key, and check all plip key's for operation.
NOTE : The programming mode will stop when either the ignition is switch ON, 4 plip keys
have been programmed or no input signal either from the switch or plip keys has been received
for 120 seconds.

http://www.autokeysquad.com/nissan-fob-programming

i hope this can help you.. :)