Frozen immobiliser
#1
Scooby Regular
Thread Starter
Join Date: Jul 2003
Location: Cas Vegas
Posts: 60,269
Likes: 0
Received 0 Likes
on
0 Posts
Frozen immobiliser
I wonder if anyone has experienced this problem. Lately, the immobiliser/alarm on my MY99 wagon has been failing to respond consistently to the blip of the fob - in some instances taking about ten minutes to work. It happens with both fobs, both of which have had the batteries replaced. The weird thing is, this only happens when the car is at the front of the house! At the rear of the house or, in fact, anywhere else in Britain, there is no problem at all.
It reached a peak last night when I couldn't set the alarm at 2 a.m, or even start the car, and spent yonks trying to do so. Now, the only thing I could think of that might be causing a problem is some sort of electromagnetic interference from domestic telephone lines or underground electrical stuff in that area causing the chip in the immobiliser to freeze. I pushed the car away from the area and it STILL wouldn't respond. In the end, I decided to disconnect the battery for five minutes and reconnect it. Hey Presto! It's cured.
Anyone had a similar experience? Are there any electronics people that might support my suspicion about the possible interference from the phone/electrical lines?
It reached a peak last night when I couldn't set the alarm at 2 a.m, or even start the car, and spent yonks trying to do so. Now, the only thing I could think of that might be causing a problem is some sort of electromagnetic interference from domestic telephone lines or underground electrical stuff in that area causing the chip in the immobiliser to freeze. I pushed the car away from the area and it STILL wouldn't respond. In the end, I decided to disconnect the battery for five minutes and reconnect it. Hey Presto! It's cured.
Anyone had a similar experience? Are there any electronics people that might support my suspicion about the possible interference from the phone/electrical lines?
Last edited by Bubba po; 19 May 2007 at 01:54 PM.
#2
BANNED
Join Date: Mar 2005
Location: --------------------
Posts: 13,289
Likes: 0
Received 0 Likes
on
0 Posts
Telephone cables are such low voltage they wouldn't be a problem. Domestic AC supplies are multicore cable, this generally cancells out any noise....so probably not.
Maybe something else? a wireless router? TV remote? microwave oven ?
Maybe something else? a wireless router? TV remote? microwave oven ?
#3
Scooby Regular
Thread Starter
Join Date: Jul 2003
Location: Cas Vegas
Posts: 60,269
Likes: 0
Received 0 Likes
on
0 Posts
It's possible there's a wireless router nearby, but not in our house. It's happened too often to be coincidence. I suspect that the pavement outside my gaff contains a labyrinthine tangle of electrical ****e; there are regular parties of students in hard-hats and pristine hi-viz vests being instructed in the use of some kind of underground electronic detector wand.
#4
BANNED
Join Date: Mar 2005
Location: --------------------
Posts: 13,289
Likes: 0
Received 0 Likes
on
0 Posts
Cable avoidance tool, it's called.
Maybe then. Perhaps you have an HV line running up your road? Are you near a substation ?
or [Tony Baron] it could be rats! [/Tony Baron]
Maybe then. Perhaps you have an HV line running up your road? Are you near a substation ?
or [Tony Baron] it could be rats! [/Tony Baron]
#7
Scooby Regular
Thread Starter
Join Date: Jul 2003
Location: Cas Vegas
Posts: 60,269
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#9
Scooby Regular
Join Date: Jan 2000
Location: Disco, Disco!
Posts: 21,825
Likes: 0
Received 0 Likes
on
0 Posts
I wonder if anyone has experienced this problem. Lately, the immobiliser/alarm on my MY99 wagon has been failing to respond consistently to the blip of the fob - in some instances taking about ten minutes to work. It happens with both fobs, both of which have had the batteries replaced. The weird thing is, this only happens when the car is at the front of the house! At the rear of the house or, in fact, anywhere else in Britain, there is no problem at all.
It reached a peak last night when I couldn't set the alarm at 2 a.m, or even start the car, and spent yonks trying to do so. Now, the only thing I could think of that might be causing a problem is some sort of electromagnetic interference from domestic telephone lines or underground electrical stuff in that area causing the chip in the immobiliser to freeze. I pushed the car away from the area and it STILL wouldn't respond. In the end, I decided to disconnect the battery for five minutes and reconnect it. Hey Presto! It's cured.
Anyone had a similar experience? Are there any electronics people that might support my suspicion about the possible interference from the phone/electrical lines?
It reached a peak last night when I couldn't set the alarm at 2 a.m, or even start the car, and spent yonks trying to do so. Now, the only thing I could think of that might be causing a problem is some sort of electromagnetic interference from domestic telephone lines or underground electrical stuff in that area causing the chip in the immobiliser to freeze. I pushed the car away from the area and it STILL wouldn't respond. In the end, I decided to disconnect the battery for five minutes and reconnect it. Hey Presto! It's cured.
Anyone had a similar experience? Are there any electronics people that might support my suspicion about the possible interference from the phone/electrical lines?
#10
Scooby Regular
Join Date: Jan 2006
Location: St Louis, Missouri. USA./Newcastle UK.
Posts: 3,935
Likes: 0
Received 0 Likes
on
0 Posts
Mobile Phone mast's,just what i was thinking.
Is there a new mast gone up close by?But i suppose if there had been a mast,you would of heard about it.
Is there a new mast gone up close by?But i suppose if there had been a mast,you would of heard about it.
#12
Scooby Regular
Thread Starter
Join Date: Jul 2003
Location: Cas Vegas
Posts: 60,269
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for all the tips, everyone. Was there a fix for the problem? I had another MY99 for four years without this problem. I don't know to a new mast going up, either.
#15
Scooby Regular
Join Date: May 2005
Location: Here and there but mainly here...
Posts: 6,738
Likes: 0
Received 0 Likes
on
0 Posts
Second that answer - Tetra works by radios in range effectively forwarding the signals and they're known for interferring with car alarm fobs etc... Normally if it is Tetra though it will clear with time so that could give a clue
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM
Mattybr5@MB Developments
Full Cars Breaking For Spares
12
18 November 2015 07:03 AM
DogsofWar
Engine Management and ECU Remapping
16
23 September 2015 07:41 PM