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.
Arming The DWA: Notes
The DWA is armed from the driver's door or by the Remote Control when the vehicle is double-locked. The DWA is armed as soon as the locked status sent by the CAS over the K-CAN-S is confirmed. The following phases are involved:
Immediately after arming:Β
- The emergency siren is armed and monitors its voltage supply.
- The DWA commences line monitoring on the local DWA K-Bus.
3 Seconds after arming:Β
- Each of the door and lid contacts to be monitored is included in the alarm table after having been in the rest position for 3 seconds.
- Faulty contacts are evaluated as closed, but are not included in the alarm table.
3 seconds after double-locking the vehicle or after locking the last door or lid:Β
- The referencing phase of the tilt sensor and interior sensor starts.
- The sensitivity level is set depending on the window and sunroof position.
- If the trunk lid is opened during the referencing phase, the referencing phase is interrupted and re-started after the trunk lid is locked.
20 seconds after locking the last door or lid:Β
- The interior sensor is included in the alarm table when its referencing period is completed.
30 seconds after locking the last door or lid:Β
- The tilt sensor is included in the alarm table when its referencing period is completed.
- If no acknowledgment telegram is received from the tilt sensor within 60 seconds of arming, this signal is deleted.
- If at least one input signal is not in idle state or if a sensor is defective, this is signalled by the flashing LED.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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