lost key

[Dandan]

I lost my key - micra 1.0 Jan 2001 - took off the barrel, can turn the ignition switch with a flat screwdriver,
it turns over but doesn't start. I understand the black-box-with-ring under the barrel needs the chip in the
key to allow ignition. It has 8 wires going into it. Can these be somehow joined up to bypass it?

Can I order a new key from Nissan, show reg doc and VIN plate photo?
do they have to tune the key to the car at the dealer?
could take ages?

I see offers of new and used key+barrels without the black thing - how can they work?

Other offers of used key, barrel, black thing and large other box - from under the glove compartment I suppose.
Does the black thing need the other box, or is that a different system with central locking, which I DON'T have?

I need the car ASAP, if anyone can help.

thanks

 

[.Maarten]

Nats (immobilizer) is locked with the chip in the key, the ring around the barrel and the ecu. You need to change those with a working set or get a new key and let the dealer program it.

 

[Dandan]

Ouch - so I need all 3, even without central locking?
The new ECU just plugs in where the old one was?
thanks
Dandan

 

[.Maarten]

Yep. You need all 3. And ofcourse the barrel (but that has nothing to do with the immobilizer but more with the steering lock and giving the ignition switch a place to mount) and door locks. But those also dont have anything to do with the immobilizer.

But if you have a complete set it will just swap over.

 

[Dandan]

OK - will a random scrapyard ECU work with my engine (it's the brain that runs the engine right?)
or do I need to make sure it's the right one for my engine size and year?
thanks

 

[.Maarten]

Right one for the engine and transmission. Year doesnt matter as long as its for that engine (coilpacks are th 2nd facelift between 2000-2002). So for a k11 coilpack 1.0 and manual or auto depending on your transmission.

 

[Dandan]

Cool
But I just opened below the radio, and the "ECU" is apparently an Airbag ECU - fine with me - but it looks nothing like the ones in the different sets for sale online. Also fixed with 3 heavy security bolts. Is that the ECU I have to change, or is there another one?

I read somewhere the ECU-which-tunes-in-with-the-key-transponder is below the glove compartment - though I couldn't see anything with
a quick look - maybe it's above/behind the heater fan?

what a nightmare!

 

[.Maarten]

No the engine ecu is behind the airbag ecu. Remove the 2 side trims of the center console near the footwell to see it.

 

[Dandan]

ARRR! ok searching many
thanks

 

[Dandan]

ARRR! ok searching many
thanks

All working thanks for your help.

 

[.Maarten]

Glad it’s al working again.