Alarm control module replacement

[Superflyguy]

Hi guys,

Been having issues with my central locking on my 2004 Spyder. The doors won’t lock with the fob. They can be locked manually with the key and locking each door individually will lock/unlock both doors. The fob will unlock the doors. I can also arm and disarm the alarm system using the fob.

I have replaced the door lock actuators on the doors but the problem persists. I was thinking of replacing the door lock ecu, but I understand this also controls the windows which both work fine.

I was thinking of changing out the control module, but would I need to reprogramme a new (used) unit to work with my current keys?

Any help appreciated.

Cheers

Guy

 

[CatmanV2]

So the alarm arms with the fob, but the doors do not lock, correct?

That being the case I'd guess that a signal to lock is not getting to the door ECU, or it's not responding to it correctly. I can't see this as an alarm issue (but happy to be corrected)

What happens if you use the lock / unlock button in the car?

C

 

[Superflyguy]

Thanks, Catman.

That’s correct, fob arms the alarm and unlocks the car, but won’t lock the doors.

The central locking works if you press the lock/unlock button inside the car by the door handle.

Where does the signal go the ecu come from? The fob itself or from the control module?

Cheers

Guy

 

[conaero]

It’s plug and play. Look for water in the fuse board area as if you don’t fix that you will have further electrical issues.

 

[Superflyguy]

It’s plug and play. Look for water in the fuse board area as if you don’t fix that you will have further electrical issues.

Thanks, it’s all bone dry.

Where is the lock ecu located? I tried looking round the fuse area and took the side wall panel off but could seem to locate it? It’s a green box I’m looking for isn’t it?

 

[Superflyguy]

Can anyone tell me where the door lock ecu is located please on my 04 Spyder?

I am currently in the footwell looking around the fuse box area but can only see the window ecu. Where should I be looking specifically?

Thanks!

 

[Gooner]

FWIW any locking/unlocking problems I have had with my 2002 Spyder have been solved by lubricating various parts of the locking mechanisms.

 

[Superflyguy]

FWIW any locking/unlocking problems I have had with my 2002 Spyder have been solved by lubricating various parts of the locking mechanisms.

Thanks, will have a look into that

 

[Superflyguy]

Well just replaced the door lock ecu and no difference! Also replaced the alarm control module but my key wouldn’t work with it.

Do the keys have to be coded to the alarm module?

 

[CatmanV2]

Well just replaced the door lock ecu and no difference! Also replaced the alarm control module but my key wouldn’t work with it.

Do the keys have to be coded to the alarm module?

When you say "wouldn't work" you mean, I assume, the remote locking? Or wouldn't start?

C

 

[Superflyguy]

When you say "wouldn't work" you mean, I assume, the remote locking? Or wouldn't start?

C

Key wouldn’t work the locking system or alarm with the new control module. The alarm then decided to continually sound in my ear whilst scrambling to fit the old unit to get the alarm to stop as couldn’t cancel with the fob

 

[CatmanV2]

Key wouldn’t work the locking system or alarm with the new control module. The alarm then decided to continually sound in my ear whilst scrambling to fit the old unit to get the alarm to stop as couldn’t cancel with the fob

You might want to think about exactly why your key fob won't turn off the alarm that used be fitted to someone else's car

*If* you had a key that did work the new alarm, you could probably pair your current keys but otherwise I suspect you're going to need someone like Abacus(?) alarms to code your current keys to a different ECU.

The central locking is clearly should be getting its signal from the alarm ECU so either your old alarm ECU may be faulty and not sending the signal, or there's a cabling issue between the two units.

What's the connector on the door lock ECU like? It *might* be possible to work out further if the signal is something really simple (like a 12v switching) but if it's CANBUS you're probably going to need a pro. Certainly someone more pro than I am

C

 

[Superflyguy]

You might want to think about exactly why your key fob won't turn off the alarm that used be fitted to someone else's car

*If* you had a key that did work the new alarm, you could probably pair your current keys but otherwise I suspect you're going to need someone like Abacus(?) alarms to code your current keys to a different ECU.

The central locking is clearly should be getting its signal from the alarm ECU so either your old alarm ECU may be faulty and not sending the signal, or there's a cabling issue between the two units.

What's the connector on the door lock ECU like? It *might* be possible to work out further if the signal is something really simple (like a 12v switching) but if it's CANBUS you're probably going to need a pro. Certainly someone more pro than I am

C

Thanks for this, will investigate the door lock ecu.

In my original post I asked if the control module needed to be reprogrammed to work with my current fob/key and was advised within the thread by another member that it was “plug and play”.

Thanks for your help, I’ll go back to the drawing board

 

[CatmanV2]

Thanks for this, will investigate the door lock ecu.

In my original post I asked if the control module needed to be reprogrammed to work with my current fob/key and was advised within the thread by another member that it was “plug and play”.

Thanks for your help, I’ll go back to the drawing board

I suspect Matt was referring to the door module which should be plug an play. You didn't mention the alarm control in your original post. However he is properly professional and I may just be wrong

C

 

[Superflyguy]

I suspect Matt was referring to the door module which should be plug an play. You didn't mention the alarm control in your original post. However he is properly professional and I may just be wrong

C

I thought control module would of been enough as the title of the thread is “Alarm control module replacement”

I think I’ll get it booked in with a specialist to figure out.

Thanks for your help to date

 

[j s pollo]

Rubber insert part number is M980001814 £2.49 from H.R.Owen for 4200 Mas two button.

As a 4200 Mas owner my circuit board in my one and only key fob died which controls the central locking and alarm.the circuit board part number S 4633 Two button and I could not switch the alarm off which gave me a head ache.

As most 4200 are fitted with the Meta M826 alarm system I had the the alarm ECU and my dead circuit board sent to Abacus car alarms in London they re coded the ECU and two and two separate key fobs and let me have their last Maserati S4633 circuit board for my mas key at a good price.
I now have a fully working Maserati key and two spare fobs programmed so my problem will not happen again
They did tell me I was very lucky in obtaining the above board because Maserati has put the blockers on these boards being sold separate I wonder why could it be the kit will cost £1.400 plus vat. ouch..
The lads at Abacus can do everything else but supply the above circuit board S4633 cos I pinched the last one..


copied from a previous post in 2018

 

[HTAFC4200]

Rather than start a new thread can I piggy back this one?

I've got the opposite issue. I can lock and arm the alarm on the car with the fob and I can also switch the alarm off with the fob, but the central locking will NOT unlock with the fob.

Previous owner had it in with meridien modena in 16 to investigate. They stripped the door and refitted rods and wiring connectors and tried a new control unit, but still didn't work.

They suspected a wiring fault on alarm ecu.

Any ideas? If the alarm arms and disarms with the fob, then it just sounds like a central locking issue?

I fixed my central locking issue on my MR2 DIY, but I don't fancy this much

 

[CatmanV2]

What happens when you press the buttons?

C

 

[HTAFC4200]

What happens when you press the buttons?

C

If the car is locked and I press the button, you get the sound of what I believe to be the F1 pump (?) And a beep, but the doors don't unlock. I have to unlock with the key.

If I just use the key, the alarm goes off and I have to use the fob to cancel it.

After leaving the vehicle I press the key fob and it locks the car and arms the alarm normally.

 

[CatmanV2]

What does the F1 pump sound like? From memory, it shouldn't prime until the door is opened.

Using the key, I'd absolutely expect the alarm to sound. The central locking and alarm are separate (although linked). What happens if you press unlock *then* open the door with the key? I expect the alarm will NOT sound

C