Thread: Can't Lock or Unlock D2 TD5

Hi Johnny,
It certainly sounds like it could be the battery. What makes you think it isn't?
Anyway, for starters try checking the battery connections, especially the earth.
Cheers,
biggin.

Hi Biggin - Just cleaned and checked battery terminals and that hasn't help.

Originally Posted by biggin

Hi Johnny,
It certainly sounds like it could be the battery. What makes you think it isn't?
Anyway, for starters try checking the battery connections, especially the earth.
Cheers,
biggin.

X2.
Maybe try to check how bright the headlights are.
(No/dull lights flat batt.).
Should dull slightly when cranking.
(No dulling and no crank, in the starter or wireing).

Is it auto.? Might be in the gear selector switch.

Hi Alien d2,
Battery OK IF I can get into the it. Its a CAT 175-4390 1000CCA 16 months old. D2 is a manual and the engine cranks nicely and fires after approx 1- 2 seconds of cranking.
The biggest hassle is trying to get it unlocked and locked again once unlocked. It unlocks and lock very randomly. This is the first time I have had this hassle. It seems like the security module isn't disarming/arming when fob buttons pushed. So is it the key fobs or security module.
Will a nanocom box interegate the security/alarm module on a D2? I have read the manual and it does the 'fender but doesn't mention D2, I guess its try and unlock the car and have a play with the nanocom!

Cheers John

Hey John,
If it's low batt. on key fob Red alarm/imobiliser light flashes fast.
Dont know a thing about the nanacoms, sorry.

Cheers Kyle

You can get into the slabs ecu with nanocom.
Goodluck
Andrew

My first thought on this was fob or main battery. Battery voltage has to be above 11.5V. The only fault my D2 had (until the DC joint blew up) was it immobilised itself for no reason. I replaced battery and fob battery and still no joy, bought RovacomLite (Nanocom wasn't about then) and checked the fault codes, there were none, but clearing the codes in the BCU did the trick and it started. What was different was my alarm sounded when the key was turned and the engine wouldn't crank.

If Nanocom will interrogate the BCU and show the rolling key code this will verify the fob is working and the receiver. The other things to check given you've checked the battery terminals is the earth points and also the cut out switch on the firewall.

The Nanocom BCU function will allow you to read the security /immobilisation settings among lots of others. Need to be careful when modifying any of the BCU settings using the "remote" function from a Laptop, its easy to set them all back to the default values when writing to the BCU. (I've been there, done that when enabling the front fog lights logic.) Not an issue if you do the toggling of the settings directly from the Nanocom.

I recommend: reading the current values, recording them, changing the one you want, writing to the BCU, then reading them back and recording for future reference.

Have a read of what all the BCU settings are and what they mean in the workshop manual before you start. The current Nanocom firmware/software doesn't do them all and there are some differences in terminology.

The Nanocom BCU setting function is very useful if you know what you are doing, it can also immobilise your vehicle if you don't!

Regards