My central locking system seemed to have failed some time ago. I finally found a replacement security module and received it today. I installed it and it worked three times and then stopped working. I am wondering if I have another problem that is possibly shorting this module out. Anyone ever run into this with the security module? Mine has the LNA2600CC/009.

 

From my understanding the early 315 hz models has many relays outside the SLCM

The later 433 hz models get rid of some of the relays

There is a hard reset that is controversial if it is a myth but works for me

Since yours is a US model with original Jaguar / Alpine stereo head no precautions to having the stereo lock out / theft protection

 

Thanks for the reply. I have tried connecting the positive and negative battery cables as well as uninstalling the module for an extended period. Neither had any impact. The odd thing about this is that the new module worked as soon as I installed it. Then it seemed to have failed.

 

There is probably something outside the SLCM that is intermittent bad to make the SLCM lock up on a logic step

3rd try corresponded to that item failing

On the hard reset the longer like overnight the better ,SLCM must stay installed

On SLCM module install the positive battery cable must be removed

Try for a many days leaving the tiny knob on the steering collum left from auto to off position

When exiting the car on key removal the linier switch ( sometimes freezes and can be lubed ) makes pin 4 to 5 of the ignition switch

This starts the go to sleep sequence of the SLCM , at the arrival of the steering and seat to relaxed exit position by position sensors it will proceed to the other logic steps like door and trunk lock arrival to lock position switches ( these can freeze )

The tiny off switch removes the seat and steering collum from the equation

You can read these lock position switches at the SLCM if they make the lock position switches

Brenden ( B1MCP ) found on his a corroded connector back through the car

 

Thank you. I will give this a shot. Appreciate the help.

 

Just to confirm, the hard reset is connecting the positive and negative battery cables together. Is that correct?

 

Yes , you can clamp with a heavy starter jumper cable but is very small drain reverse current , place shop towel over exposed battery posts

Your draining capacitors and latching whatchumacalllits in the SLCM and BPM as these are hot - wired powered from the battery but not the engine ECU

Battery condition good ?

 

Battery is fine. I put in a new one with no impact on the issue.