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Discussion Starter #1
Hi just signed up as after searching Google this seems to be the most knowledgable site on Renaults. Unfortunetly I couldn't find an answer through searching so hopefully someone can help.
I have just came back from 2 weeks on holiday and went to start my car but the red immobiliser light is staying on and the car is cranking over but nothing else. The battery in the key had gone flat but having replaced it now the central locking works but it still won't start. I've also checked the battery which had more than enough power to start it.
I have read that there might be some sort of procedure to reset the immobiliser, I have searched the FAQ's but this only explained how to reset the central locking.
Please if anybody had any ideas I would be very grateful.
Someone mentioned there is a procedure in the car manual but I don't have one so if anybody could confirm this it would be good.
Thanks
 

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Discussion Starter #3
Hi Chris thanks for the reply. I had actually went through that thread but my understanding is this is just for the central locking. My central locking does seem to work although when I hold the button down it will only perform one action i.e lock, not lock then unlock.

I've read some people saying with these keys there is no way to reset anything and others saying that you can and giving sketchy details i'm just not sure.

I'm reluctant to put my car into Renault as I know from researching topics on this that the first thing they will do is replace the key at around £150 and take it from there. On top of that I need to get it towed somehow.

I have spoken to an auto locksmith who has said he can try and read the information of the key though i'm not sure what he can do with this as, he said it would be around £70.This would be handy as he is mobile but he says if that fails his only other option would be to bypass the immolbiliser which i'm not to keen on as I don't see it as a permanent solution although he still thinks it's worth £145 of my hard earned.
 

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Discussion Starter #5
Yes I can see a code on the key fob circuit board. Do you know where I would go from here to work out what I do with it?
 

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Discussion Starter #6
Solved the problem so just thought i'd post it up incase anybody has the same problem in the future.
I was up until late last night checking Renault dialogys for procedures to reset it. All I could find was the guide like Chris gave me the link to about how to resync the central locking. Well the central locking was working fine but all I had to do was put the key in turn ignition on, turn the key back and hold the centre console central locking button.
I then turned the key back on the immobiliser light went out and the fuel pump primed and hey presto it fired up.
Not that I know everything but I was quite convinced it wasn't as the AA man said that I need a new key and i'm quite chuffed with myself as it's just saved me at least £70!
Thanks for your help.
Mark
 

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You can bypass immo also by inputting the emergency security code that's printed on your renault manual.
If you lost this you can generate it again by using the emergency code decoder from this link by inputting the code from the inside of your key. :)
 

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Discussion Starter #8
You can bypass immo also by inputting the emergency security code that's printed on your renault manual.
If you lost this you can generate it again by using the emergency code decoder from this link by inputting the code from the inside of your key. :)
That's a very interesting link, I could only find one four digit code on my key and when I tried inputting it with the model code it said incorrect not enough digits I think.
You sure that isn't for the ones the infra red keys?
 

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Now on some models the program works with firs 6 or 9 symbols of VIN number. On other models, like mine - with engine code.
My code for example is: K4MA700 - those are the first symbols of engine number.
If program does not work with VIN try with engine code.
Generally it is inteneded for use with VIN #s.
Next, type the security code that can be found either on your original renault documentation, or the inside of your key.
It's quite simple to disable immo:
1. Generate code using the program
2. Get in car, red immo light should be blinking, when unlocking it should flash faster.
3. Press the central locking button on the dashboard (no difference which way). Red immo light should go out or fade.
4. Pay attention to the red immo light - after p.3 it will go on again and go out in 1.5 sec intervals. That's the beggining of the counting. Count how many times the red immo light goes on - that count should equal the first number of your emergency code.
5. Press central locking button again and count as according to p.4 for the second number.
6. Repeat until you input all the numbers.
7. If you did all correct, you should be able to start the engine. The red immo light will go on for 3 sec in 30 sec. intervals.

Please note: you have three tries. If you get them wrong do not attempt for fourth time. Wait 15 min, then repeat.

Disabling immo this way works up to the 10th minute after you turning the ignition off. After 10 min. the immo activates automatically and you have to repeat deactivation again.
The immo is activated again also when you lock the car with your car key or disconnect your battery.

All in all, that's it, sorry for the bad English.

Have fun and use this only to get your car to the repair shop.

Ah, just forgot to say that instead of the cetral locking button you can use also the button on the tip of the wipers's stalk for those modifications with onboard computer.
 

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Discussion Starter #10 (Edited)
Well this problem has cropped up again:mad:

The car itself had being cutting out for some reason when I went into reverse. On Friday night it cut out reversing out the drive and the red immobiliser light stayed on. Holding the central locking button seemed to solve it withing 10 attempts.
The car was left between then and Tuesday and when I have tried to start it the immobiliser light is staying lit along with the stop and battery and oil can light.
Today I went and got all the relays a Top Dead Centre sensor and the immobiliser reciever ring around the steering wheel. None of these made any difference.
I'm guessing now it has to be the key.
Anybody care to add there thoughts?
 

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Discussion Starter #11
DemonXP I have tried that program again. It asks for the vehicle type which I put in it then asks for keycode. The 4 digit code on my key when I enter it says it is too short.
So I took down my vin number and the program seems to want 7 digits so I put in the first 7 and it generated two code it says code securite antidemarrage 1 and 2.

Firstly I don't know which one too try one?Secondly my immobiliser light seems to flash all the time when i'm in the car but doesn't seem too flash faster or slower anytime.
Where am I going wrong?
 

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Hi,

I've just had a similar problem with the immobiliser. Please post a blow-by-blow 'how to for dummies' if you get your car going.

Mine's a Laguna 2.0RTi. Wouldn't start a few weeks ago, but I got it going by spraying Quick Start into the air intake, and thought it was just a dirty injection system.

It wouldn't start tonight at Tesco and the spray wouldn't work. The Green Flag mechanic diagnosed a dodgy immobiliser so I read about this new (to me) thing and yes, I've a rapidly flashing central lock button and no power to coils, etc.

Annoyingly I had the car towed to a garage. Now I've read about immobilisers (and downloaded that prog), I'll be at the garage early to get my numbers.

Intersetingly, I noticed that the key now has a red light when pressed. I'd noticed the bulb cover before and also that there was no light when pressed.

If I'm back running before you post I'll post how I did it.
 

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Hmmm. Tried the program in preparation for tomorrow but it won't unzip. I used winrar and got an error window (tried downloading from two servers).

If you've got the prog working, any chance of PMing you some numbers?
 

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Hi,

I've no idea how I might have infringed copyright, but the matter is moot now.

I couldn't unpack the rar file mentioned, so I got the code from alarmremote. Helpful fellow called Dave patiently guided me through the code aquisition process, a process made more complicated by the fact that the key I've got is unusual for a '96/97 Laguna, and what looked like a z was in fact a 2.

Here is a what I had to do to de-immobilse my car.

1. Find car numbers (on a sticker in the engine compartment and on a sticker in the driver's doorwell on my car. This was one long series of numbers and letters.)

2. Find key number. (Open the key fob, then ignore the 4-figure number and look for a yellow sticker or a franked stamp of 8 digits/letters, followed by an = sign and three numbers). *I was very careful about not separating the battery from the connector in the fob (plip) for more than 15 seconds.

3. Phone alarmremote, tell them the numbers, pay £10, get 4-figure code.

4. Insert key in ignition and turn so that dashboard lights are on.

5. hold down the central locking button near the handbrake. The rapid flashing red light will go out, then start to flash slowly. Each flash represents one numeral of the first number of the code. When the required number of flashes has been reached, let go of the button.

6. Repeat (5) for the other three numbers of the code.

7. Wait a few seconds (I waited 30 secs) while the red light goes off, then stays on.

8. Start the engine (I did this without returning the key to the off position or removing the key). The red light goes out.

9. Drive away with a podgier wallet than your mechanic would have hoped for.

*It's worth noting that two local Renault dealers quoted £50 and £80. One said that specialist equipment was needed. Another said a new key would be required. The local garage (usually good) thought that I needed a new ECU. They looked genuinely suprised to see me drive off!

Thanks to Renaultforums and those who posted. Immobilsers are a new hell for me and I was dreading a large bill.
 

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Cheers musineer !!

I used this procedure with the bypass code on my 96/97 Scenic, and it works great!

I had an intermitant fault with the central locking / immobiliser. On damp days, sometimes it wouldn't respond to the key fob, (leaving me immobilised).
I spoke to a few fob replacement people after doing a google search, and it turns out the fuse box on megane's and scenics are prone to corrosion, and the fault i had was one of the symtoms. The fuse box controls most of the electics in the car (indicators, wipers, tacho, speedo, etc).
So i thought i'd better start researching into it, found the software to generate the code. And using the procedure musineer has written, i now wont be left stranded when it fails again. In the meantime i intend to try to open the fuse box and clean it up along with any other connections i can find around there.

Damp is the cause, the scenic suffers the most apparantly, probably due to the twin sunroof leaking twice as much as normall!! ( blocked drain holes mostly cause the sunroof leaks )
 

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Glad to be of help Mannie. Useful site isn't it?

Working from home I find I don't drive much -- my 'commute' is now merely an amble to another room. I drove about 2000 miles last car year and am averaging about 35 a week this year.

This, combined with a general lack of funds and an aversion to spending what I have, has meant I've decided to see how long the button trick will work (the guy I bought the code from suggested it was only temporary: 10 uses, or 100 miles, or some such). It's now early December and I've lost count of how many times I've started the car via this method.

I've got about 10 minutes from locking the car until the immobiliser kicks in, so petrol refills are ok but a spree at a supermarket means I have to re-enter the code. I imagine this would get irksome were I to use the car daily, but I find short stops (post office, bank, etc) take less than 10 min these days!). Immobilising the immboliser would bother my insurers.

I will check the fusebox, though I fear in my case it's a defunct circuit and it'll be a few hundred quid to solve properly.
 
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