Double beep on lock and unlock

[shack]

Hi.

Currently doing a couple things on a 2.7 Discovery 4.

It has always double beeped on lock and unlock.

Everything seems to lock and unlock correctly though.

No faults that I can see in any related ECU's.

Does anyone have any ideas on how to track down what's causing it?

I'm guessing a lock related sensor isn't supplying the correct info to the bcu.

[V8Ian]

Does the interior light go off when the doors are hut?

[shack]

Does the interior light go off when the doors are hut?They all do after about 1 minute.

[Tombie]

Usally a bonnet closure sensor has failed

[veebs]

There is a CCF configuration for arm/disarm chirp. In the Body Control Module.

Is it possible someone has fiddled with a GAP tool or similar previously?

[shack]

Usally a bonnet closure sensor has failedWould that normally trigger a "bonnet open" warning on the dash?

[shack]

There is a CCF configuration for arm/disarm chirp. In the Body Control Module.

Is it possible someone has fiddled with a GAP tool or similar previously?This is possible but I think unlikely.

I will investigate for sure though.

I'm just waiting to sort some diag tool accounts to be sorted before I can pursue.

[V8Ian]

Would that normally trigger a "bonnet open" warning on the dash?
Doesn't on a D2, yours may differ.

[veebs]

This is possible but I think unlikely.

Agree, however the open bonnet switch or similar responses here should prevent you from locking. If it beeps but locks, i still suspect the 'chirp' setting

[discomatt69]

When mine double beeps on trying to lock it due to door or bonnet open it won’t lock

[shack]

I think it's a setting in the CCF.

I've checked the "as built" ccf, under safety/security and locking, and "vehicle horn on alarm enable" is set to yes.

It says 63% of cars were set to yes from factory.

If that is true, I'm guessing a lot of dealers turned it off when new.

I can't currently alter the CCF to test.

Also my post title is incorrect, the horn beeps once on lock, twice on unlock.

[shack]

Agree, however the open bonnet switch or similar responses here should prevent you from locking. If it beeps but locks, i still suspect the 'chirp' settingSo I think you are the winner! Although it appears it is from factory like that.

I'll be able to verify later.

[shack]

It was indeed the chirp setting.

Thanks Veebs.

It was turned on in "as built" by the look of it.

[Eric SDV6SE]

On the D4 beep once on lock and twice on unlock is correct. If a lat h sensor is faulty, it won't lock the car and double beeps.