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.
Reading Off The Alarm Cause
2017 Volvo S60 T5 Inscription, FWDSECTION Reading Off The Alarm Cause
Different stored values can be read off using this function:
- Alarm cause. Last stored input signal that triggered the alarm.
- Not triggered. The alarm has not been triggered since the last reset.
- Voltage drop siren.
- Vehicle tilt sensor
- Motion sensor
- Driver's door
- Passenger door
- Left rear door
- Right rear door
- Trunk lid / Tailgate
- Hood
- Open-circuit in the communication between the central electronic module (CEM) and the siren.
- Unauthorized start attempt
- Heartbeat sensor (for vehicles with heartbeat sensor).
- Alarm status, fault in vehicle tilt sensor. The value can be True or False.
- Alarm status, fault in siren. The value can be True or False.
- Alarm status, fault in motion sensor. The value can be True or False.
- Alarm status, fault in heartbeat sensor (for vehicles with heartbeat sensor). The value can be True or False.
- Alarm status. The value can be the following:
- Activated
- Deactivated
- Triggered
- Alarm cause, table. Reading off the 8 last alarm causes and the time when they occurred.
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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.