Hi
Does anyone know if the
Cayman S
has a tilt sensor built into the alarm system?
I can't find any mention in owners manual so I assume not. I'm about to go on a long ferry trip with my car and if it has a tilt sensor the alarm will run long enough to flatten the battery.
Many thanks for any help
Rich
Where are you ?
If your in the USA there isn't a sensor fitted to the car, Europe only.
I was under the impression that US cars had a 'passenger compartment monitor' sensor. (refered to on page 28 of the US owners manual). But Nick may be right, it may not be in US cars.
Even if it is, it's nothing to worry about on a ferry. It's not a motion, shock or tilt sensor. It sounds like it's a 'field disturbance' sensor.
i jacked my car up and took the wheels off when the alarm was on... :argue:
Hi again
Thanks for your replies. I'm in the UK and me and a friend are off to the Belgian Grand Prix
next
weekend, hence the ferry crossing.
I'd read about the motion sensor in the cabin, which can be turned off. But it would seem if it is possible to jack the car up with the alarm on that there is no tilt sensor to worry about.
many thanks
Rich
P.S. Anyone else from this forum going to watch Lewis Hamilton win in Belgium
A Tilt sensor will use an accelerometer to measure changes in the orientation of the car relative to where it was when the system was armed. These are great for protecting motorcycles and wheels as they can be set to react to as little as 1 degree of change.
A Motion sensor uses a pendulum to sense movements of a car. These were largely used in the 80s but abandoned in the 90s because of high amounts of false signals caused by wind, wind blast from passing cars, etc...
A Shock or Impact sensor uses a magnet suspended in front of an iductor to sense impacts to a vehicle. These replaced the old motion sensors because they are far more omnidirectional and they resist false signals far better but an impact such as a car door or grocery cart will trigger them.
A Field Disturbance sensor uses either a radio beam (called radar sensors), infrared sensors or ultrasonic sensors to sense intrusion into a field or area. Infrared is never used in cars because sunlight messes with them. Ultrasonic is sometimes used because their 'field' will not extend outside the windows of a car. Radar sensors are good for convertibles where ultrasonics will not work, but they do penetrate glass and will be subject to false alarms.
The
Cayman
comes with an Ultrasonic Field Disturbance sensor. Not a Tilt, Motion, Shock or Impact sensor.
i'll be there to hopefully see him
not
win.
Thanks Nick
I think I'll do the quick double press thing and take the owners manual out of the car. Just in case I need to know how to start the car with a dead battery.
A friends X5 had a dead battery after the same ferry crossing due to his alarm and had a nightmare even getting into the car!
Cheers
Rich
Tilt Sensor
If you search the European parts catalog for the alarm system you will find part number 997 618 265 00 , the control unit tilt sensor. It is part of the option I536 - Alarm unit and Tilt Sensor.
In the USA parts catalog the unit is still shown on the diagram but as it is not a USA option the part number for this unit is not listed.
For those guys in the UK I believe you may be able to change the alarm settings using the OBC ie the tilt sensor but if this is not the case you can have it turned off by the dealer for a more permanent solution.
