A&Q about 350Z
Q:
Has anyone heard of this happening, or am I the only one to find this out????
I'm on a roadtrip visiting my son in Kansas. I lock my 350Z... head to the door to hit the doorbell... and my Z unlocks itself... Crazy! Then relock my Z, press the unlock button and the darn doorbell rings... Really Crazy...
03' SS Touring 6MT
A:
It's all in the Homelink transmitter! But I smoked a J last week and the same thing happened to me except it was when flushed the toilet!
A:
OZ- so basically what you are saying is that the lights and horn have never sounded???? j/k
I hope everyone is enjoying their Z's now that the weather is beautiful again.
Current Car- Lexus IS300
Sold the 350z:
silverstone enthusiast
Injen CAI
alpine 1004 monitor
Polk momo 6 1/4(4)
Boston Acoutic tweeters
In dash DVD
MMAT 10 inch sub w/kenwood 800 watt amp
6 disc alpine cd/mp3 changer
A:
Damn you tommyboy350, you took my burn!
A:
I haven't had the doorbell thing happen. But I have set off a few alarms on other cars when using the remote.
Frequencies are not infinite. There are some that cross over. When I was a kid our garage door opener would open when this one particular guy (neighbor around the block) would drive in front of our house with his Ford pick-up.
A:
Its pretty unlikely that a wireless doorbell would unlock your car. Car security systems and modern garage door openers use rolling encrytion codes that are near impossible to crack. The code changes each time you open your garage/car door. The odds of you hitting the right code are near nil.
It doesn't matter that the doorbell transmitter and your car use the same frequency (also unlikely). Its like putting the wrong key in a lock - it might go in, but it won't open the lock.
Its been 15 or 20 years or so since a CB radio could open a contemporary garage door.
More than likely your keyfob button got pressed by coins or keys in your pocket. It has happened to me several times. Usually it sets off the panic alarm and I notice right away. Sometimes it locks my car when its parked inside my attached garage.
I do radio telemetry and write encryption software for a living.
A:
Skydiver...
I just got back from my trip... I was dangeling the key fob when this occurred. When pressing his wireless doorbell... it unlocked my Z and the doorbell rang. When I unlocked my Z using the fob... the door bell rang. He has a single-car garage and was nice enough to allow me to park my car in his garage.... so no one could get in my Z just by pressing his doorbell. He said that it also unlocks his neighbors Ford Truck.
Just put 3500 miles on my Z this past two weeks.
'03 SS 6MT
A:
Talon32 wrote:
> I thought the Z used a rolling code system on the key fob?
>The garage door unit he has may be old enough to not have a rolling code >system but I am almost sure the Z does.
Correct.
The computer chips to do rolling codes cost under a buck. Nobody does remote control the old fasioned way with fixed codes or like back in the (bad) old days fixed audio tones. The old audio tone system was easily triggered by CB and police radios.
With working rolling codes you have a better chance of getting struck by lightning while driving over to pick up your super lotto winnings than to have some other device activate your security system by accident.
If there were a severe firmware bug in the Z security system, there would be a *lot* of complaints about this sort of thing. Security code chips are made by the millions and a bad batch would show up quick.
Kevin
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2003 350Z Track
Silverstone with Nav, Michelin Pilot Sport tires
Alpine CDA-9847 head unit
Pioneer 4-way speakers
Sirius module