Mine horn doesn't beep when I lock. Is it supposed to? I searched the forum and the only thing I found was an old thread from 2010 which basically said that's the way it works. Is that correct? It's rather irritating to have to look back at my car to see if the mirrors are folded to know if it's locked.

 

On North American market X150 models, the beep means "Stop pushing the lock button, I'm already locked."

Continuously locking and waiting to hear the error message beep will cause your sounder (the beep module) to fail and never beep again. Ask me how I know.

The choice is yours. You can either look at your side view mirrors and confirm that your car is locked or eventually replace the sounder.

 

The way I see it, that beep on the second press isn't an "Error" message, but a sounding to let the presser know that indeed the car is locked. Fords also do this, and it isn't an error or a malfunction. Since the first press is silent, who knows if the car actually locked when not within the slight "thunk" noise, or not facing the car to see the lights flash? Many cars have a beep on the first press, thereby letting the presser know the car is locked. Jags (and Fords) are kind to sleeping neighbors and have a bit more decorum as to not have an irritating "BIPPPP" upon ever Lock press. It's a feature, not a malfunction (or error).

 

I had a malfunction of the solenoid that powers the locking mechanism and when I would hit the lock button the car would beep two times. The mirrors would not retract BUT the alarm would come on. Since I got that straightened out the only time it beeps is when it is "double locked" per the owner's manual.

 

Hi guys, in Europe the first action locks the doors from the outside and the second locks from the inside with the "BEEP"

 

North American market X150 models are not equipped with the European double-click feature, which prevents the doors from being opened from the inside. Europeans consider the to be a theft preventer but we Yanks considered to be a safety hazard that prevents a child locked inside a hot car from opening the door and escaping. The double beep on North American market models is an error message that the doors are already locked.

https://www.jaguarforums.com/forum/w...d.php?t=230706

 

If you leave a child in the car, you hit the button once, which locks the doors from the outside but not from the inside. Not a safety hazard.

 

Except we seem to have a lot of frazzled parents over here that forget they have a kid in the car when they get out and lock it.

 

Page 30 of my owner's manual describes two different alarm settings depending on the number of button presses. According to the manual, one press sets a "perimeter alarm" which sounds if: •The bonnet, luggage compartment or either door is opened •The vehicle battery is disconnected •An attempt is made to disconnect the alarm system •An attempt is made to start the vehicle without the smart key present.

Two presses of the lock key sets the "full" alarm which along with the perimeter alarm functions adds: •Movement is detected within the vehicle's interior. •A window or front or rear screen is broken •The vehicle is raised or tilted.

I see nowhere that describes a situation where the car cannot be opened from the inside. According to my manual there are two levels of alarm, hence the "double lock".

 

In the service manual I found something called a "battery backed sounder". I'm slightly disturbed that they left out the hyphen, but I'll get over it. In any case, THAT is apparently the sounder for the security system. It doesn't use the horn, like most cars do these days, it uses a separate sounder like a cheap, aftermarket security system.

I guess I need to go find that sounder and see if it's still working. I've never heard it chirp.

The manual says it in the right rear of the engine bay on the firewall.

 

I'll like to change the whimsy beep to a growl. I always thought the second lock press put the car in a deeper sleep sooner.

 

There’s a thread around here where someone replaced theirs. Think it was under the coolant reservoir.

 

I FOUND IT!!!

My car is apparently fitted with #8, the "passive anti-theft horn", not #9, the "battery-backed sounder". It's super-easy to access. I just took off that little plastic cover on the right side of the car, directly in front of the windshield, and there's a cavernous area behind the wheel arch with a couple of connectors and the passive anti-theft horn. I jiggled the connectors and tapped on the horn, and when I double-clicked the lock button on my fob the horn emitted a weak, pitiful chirp for about a tenth of a second. I jiggled and tapped some more, but I couldn't make it chirp again. Clearly the passive anti-theft horn is bad.

Does anyone know the part number? The manual doesn't list part numbers.

Mine looks exactly like this picture, except instead of having two spade connectors as shown in the manual, mine has a single plug with a plastic connector.




And it's located here. There's enough room in there to fit both arms, some tools, and a small puppy.

 

That is because handbooks are region specific. Yours probably starts JJM 18..., one for the UK is JJM 10... and they have this section in them:



And this:

 

That all makes total sense. But it still doesn't mean that the second press on my door locks is "just a warning beep". My manual refers to it as a double lock and the alarm system is engaged at a different, stronger level.

 

Mine is JJM 10 02 30 121

 

You can ignore that manual then because it isn't the right one for your car as it is the UK one .

The US one that should have come with your car (JJM 18 02 30 121) has pages that are US specific in it like this as well as info on Sirius:



And this is the correct section for your car from the US version:



My copy of JJM 10 02 30 121 has this on page 18 so I assume the one you have does too:

 

OK, correct, incorrect whatever, could you go to the area where it talks about the car alarm and tell me what it says there?

Or just forget it, I'll get a friend and test it myself.

 

De5in,
You're in the USA. If you don't understand what the above photo of the relevant section of the manual says, then scroll up to my Post #6 in this thread and read what I wrote on June 22.

For US market X150 models, the double beep is an error message indicating that the car is already locked.

Stuart

 

In that case, I can see the need to idiot-proof the lock