If you have trouble starting your key fob then you need to know how to reset Discovery 2 Immobiliser. You don’t want to be out of the city with all that gas going to waste in the tank.

Let’s proceed to the crux, how do I reset my discovery 2 Immobiliser?

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How Do I Reset My Discovery 2 Immobiliser?

The Immobiliser prevents the vehicle from being started without using the key. After the engine has been started, the Immobiliser automatically disables itself so that it does not prevent re-starting of the engine following a short stop.

The Immobiliser can be disabled by carrying out one of the following actions:

Immediately open the door, insert the key in the ignition switch and turn the switch to position II. If the ignition switch is not turned to position II within 30 seconds of the end of the 5 minute wait, the engine is automatically immobilised again.

Turn on any electrical device (e.g. heated rear window). If this is done, ensure that it is switched off before leaving the vehicle otherwise battery drain may occur.

Wait for five minutes before attempting to start again. The ignition must be switched off during this period.

How Do You Program A Key On Discovery 2?

It takes a little while to get the hang of it, but programming a key on a Land Rover Discovery 2 isn’t too difficult.

The first step is to find the “diagnostic” port on your SUV. The diagnostic port is located behind the driver’s side airbag and is rectangular in shape.

After you’ve located the diagnostic port, open the fuse box — which contains a cover that lifts up — and turn the ignition switch “on.” Insert your key and turn it back to the “off” position three times within five seconds of turning it to the “on” position.

The door locks should lock, meaning you successfully programmed your keys. If not, repeat these steps until you succeed.

How Do You Fix An Immobiliser Problem?

Many immobilizer problems can be fixed simply by simply replacing the battery in the key fob. Many transponder keys depend on a small battery to relay the security code to the car immobilizer.

If you have multiple keys, try using one of them, if that doesn’t work, try using the other, or try using both together (if your keys can transmit simultaneously).

If there is no response from any key, it is highly likely that there is a problem with your vehicles computer and you will need to get it to a dealership for diagnosis and repair.

How Do I Know If My Immobiliser Is Faulty?

A faulty immobiliser can stop you from starting your car or cause it to cut out while driving.

If the immobiliser light stays on when you turn the key in the ignition, this is an indication that it’s not working properly. If there’s a clicking noise when you attempt to start the vehicle or the engine cranks but fails to turn over, this is another sign that the immobiliser has gone wrong.

Faulty immobilisers are common and can be caused by a number of things. If your vehicle has been damaged, you may have knocked something loose, so check for any signs of damage underneath to see if anything has come loose under your bonnet.

Another common problem is moisture getting into the wiring and causing a short circuit — this can happen if you’ve driven through deep water. Try drying out any affected areas and see if this solves the problem.

What Happens When An Immobiliser Stops Working?

Immobilisers are designed to prevent you from being able to start the engine of your car if your key hasn’t been used to unlock the doors (or the boot/trunk) of the car first.

The idea is that if a thief gains access to your car without your key, they’ll be unable to start it and drive off with it. If you’ve lost your keys or had them stolen, you’ll also be unable to start the car unless you get new keys cut (and they need programming too).

The way an immobiliser typically works is by using transponder technology. A transponder is a small device that’s built into the plastic head of your key. When it’s in close proximity to your car’s antenna, which is usually hidden around the ignition barrel, the correct code will be transmitted back to the vehicle’s ECU (Engine Control Unit), which then allows power to flow and starts up the engine.

Can The Immobilizer Be Disabled And Bypassed?

The answer is yes and no. Yes, you can disable the immobilizer but you need to know what you are doing from an electrical perspective. Simply disconnecting it will leave the rest of the system unprotected.

The best way to do this is to locate the electronic module which controls it and remove it from the loop by disconnecting one of the wires connected to it. This would require knowledge of where it is located as well as what wire to disconnect.

If you have a vehicle with a push button ignition, then locating the immobilizer module will be relatively easy and once located, it can be disconnected by removing one of its wires.

It’s that simple.

How Much Is A New Immobiliser?

If you’ve lost your car key and need a replacement, the cost can vary depending on several factors.

First of all, the make, model and age of the car will affect how much it costs to get a new immobiliser.

Most new cars come with a smart key, which allows you to unlock the door by simply pressing a button on the handle or trunk. More often than not, these keys are combined into one piece with the main ignition key. It’s also worth noting that some manufacturers use different types of smart keys for different models. This is why replacement keys for some vehicles are more expensive than others.

If you want the same kind of smart key as the original one, it could cost you up to £300 to get a replacement from a main dealer such as BMW or Mercedes-Benz.

However, if it’s an older vehicle (such as an MK1 VW Golf), then it might only cost £30 to have a new key cut at a locksmiths or even less if you know someone who can do it for free.

What Does Immobiliser Active Mean?

When you start your car and the immobiliser is active, it means that the vehicle’s computer is checking your key’s embedded transponder chip against the one stored in its memory. If everything matches up, it continues the starting process. If not, the engine won’t turn over.

Immobiliser systems are designed to prevent thefts by stopping a vehicle from running unless someone has a key with a matching transponder chip. Immobilisers have been standard equipment on all vehicles sold in Australia since 2001 and all new cars registered since July 1, 2012 must be fitted with an immobiliser that complies with Australian Design Rule (ADR) 81/02.

The fact an immobiliser system is active is not something you can see or hear from inside a car — it just happens behind the scenes as part of the engine starting sequence.

It is possible, however, for an immobiliser to fail to engage properly and this may cause your car to start without any problems at all. This can happen if there is a problem with your vehicle’s key or if a previous owner has had some work done on their car and didn’t provide their mechanic with the right code to disable the system.