Bonnet & Alarm

matchless · 24th February 2019, 10:35

Hi,
I am having trouble with my Bonnet and alarm, the switch has been changed for a new one, the bonnet height adjusted and additional padding put in place all with no effect in the alarm, which still goes off randomly, stating the bonnet is open.
It looks like a wiring issue, which may take some time to sort (time is one thing i dont have !) my question is can the alarm be disabled so I can lock the car at night,or if used for a journey?
Thanks
Paul

matchless · 26th February 2019, 07:19

Hi,
Any ideas what I can do for now,except disconnect the battery?
Thanks

cbr1100xx · 26th February 2019, 13:57

Remove the switch

Stan

Mickyboy · 26th February 2019, 20:09

Quote:

Originally Posted by matchless

Hi,
I am having trouble with my Bonnet and alarm, the switch has been changed for a new one, the bonnet height adjusted and additional padding put in place all with no effect in the alarm, which still goes off randomly, stating the bonnet is open.
It looks like a wiring issue, which may take some time to sort (time is one thing i dont have !) my question is can the alarm be disabled so I can lock the car at night,or if used for a journey?
Thanks
Paul

Hi Paul
Try this remove the switch and check the wiring loom plug, seen quite a few inc one of my own that had corroded in the plug and was causing it to trigger the alarm at will, replaced the loom and job done,
Mick

Mr bountyfull · 26th February 2019, 20:39

I have been in the same situation. I even bought a new switch and fitted it still went into alarm!!! I turned out to be the battery. Once the battery was replaced fault never came back.

Regards Steve

trikey · 26th February 2019, 20:41

I had a similar problem, the wire was broken (Well plastic chafed and corroded the copper) About 3" below the plug.

matchless · 26th February 2019, 21:48

Quote:

Originally Posted by trikey

I had a similar problem, the wire was broken (Well plastic chafed and corroded the copper) About 3" below the plug.

Thanks,
I will try to whip the bumper off at some point this weekend, time permitting.
(Cars always hit problems when you dont have time on your hands!)

matchless · 26th February 2019, 21:49

Quote:

Originally Posted by Mr bountyfull

I have been in the same situation. I even bought a new switch and fitted it still went into alarm!!! I turned out to be the battery. Once the battery was replaced fault never came back.

Regards Steve

Worth checking,thanks.
Paul

matchless · 26th February 2019, 21:53

Quote:

Originally Posted by Mickyboy

Hi Paul
Try this remove the switch and check the wiring loom plug, seen quite a few inc one of my own that had corroded in the plug and was causing it to trigger the alarm at will, replaced the loom and job done,
Mick

Thanks,
is the loom easy to change/get hold of?
I did notice one morning, a day or so before the bonnet warning/alarm issue, that the outside temperature reading on the dash went up to about 36 c before settling at a correct 4 or 5 C.
May be connected, going to have to find time this weekend . somehow!.
Thanks
Paul

Mickyboy · 27th February 2019, 17:39

Bumper and landing panel etc off then easy to change mate
Mick

24th February 2019, 10:35	#1
matchless Gets stuck in Mazda cx7/1979 T140e Join Date: Jul 2010 Location: Kent Posts: 524 Thanks: 103 Thanked 50 Times in 34 Posts	Bonnet & Alarm Hi, I am having trouble with my Bonnet and alarm, the switch has been changed for a new one, the bonnet height adjusted and additional padding put in place all with no effect in the alarm, which still goes off randomly, stating the bonnet is open. It looks like a wiring issue, which may take some time to sort (time is one thing i dont have !) my question is can the alarm be disabled so I can lock the car at night,or if used for a journey? Thanks Paul

26th February 2019, 07:19	#2
matchless Gets stuck in Mazda cx7/1979 T140e Join Date: Jul 2010 Location: Kent Posts: 524 Thanks: 103 Thanked 50 Times in 34 Posts	Bonnet switch Hi, Any ideas what I can do for now,except disconnect the battery? Thanks

26th February 2019, 13:57	#3
cbr1100xx Gets stuck in VW touareg Join Date: Mar 2015 Location: dunsop bridge Posts: 870 Thanks: 225 Thanked 414 Times in 235 Posts	Remove the switch Stan __________________ WE WERE BOTH BORN ON THE 4th of JULY CAR DIED 15/11/2022---I'M STILL GOING (JUST)

26th February 2019, 20:41	#6
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,762 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I had a similar problem, the wire was broken (Well plastic chafed and corroded the copper) About 3" below the plug. __________________ Lest we forget..

27th February 2019, 17:39	#10
Mickyboy SERVICING AND DEALER DIAGNOSTICS MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	Bumper and landing panel etc off then easy to change mate Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

26th February 2019, 20:39	#5
Mr bountyfull Gets stuck in MGZTV8 Join Date: Aug 2008 Location: Newbury Posts: 567 Thanks: 173 Thanked 82 Times in 58 Posts	I have been in the same situation. I even bought a new switch and fitted it still went into alarm!!! I turned out to be the battery. Once the battery was replaced fault never came back. Regards Steve

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