Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
System Overview: Notes
The alarm is an entry protection for the vehicle. The aim is prevent anyone getting into the vehicle or manipulating the vehicle in any way without being detected.
The alarm is available in various configurations:
- Perimeter guard. This configuration includes door open sensors in the lock motors, alarm LED and siren control module (SCM) but no vehicle tilt sensor. The C30 and C70 do not have any rear door open sensors as the models do not have any rear side doors.
- Perimeter guard with Mass movement sensor module (MMS) or ultrasonic sensor module (IMS), (Ultrasonic sensor module (IMS) replaces one or two Mass movement sensor modules (MMS) from and including model year 2012 for the for S40, V50 and C30). The Mass movement sensor module (MMS) alternatively ultrasonic sensor module (IMS) is used to detect movement inside the vehicle. In this configuration the C30 also has a glass breakage loop in the rear windscreen. Siren control module (SCM) without vehicle tilt sensor.
- Perimeter guard with Mass movement sensor module (MMS) or ultrasonic sensor module (IMS), (Ultrasonic sensor module (IMS) replaces one or two Mass movement sensor modules (MMS) from and including model year 2012 for the for S40, V50 and C30). The Siren control module (SCM) with vehicle tilt sensor. The vehicle tilt sensor is used to detect changes in the vehicle's position. In this configuration the C30 also has a glass breakage loop in the rear window.
Definitions:
- Deactivated: The alarm is not activated and is not protecting the vehicle
- Activated: The alarm is protecting the vehicle and will be triggered if there is an input signal from one of the sensors
- Triggered: An alarm cycle has started. The siren sounds for 25 seconds and the turn signal lamps flash for approximately 5 minutes
- Reactivated: The alarm has been triggered and an alarm cycle has been completed. If a check of the sensors in the vehicle shows that they are OK the alarm will be reactivated.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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