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Audible 'click' not heard (BGA 45)

Audible 'click' not heard - Trigger switch may be damaged

Stihl · Power Tools

What does Audible 'click' not heard (BGA 45) mean?

When the trigger is gently squeezed, an audible click should be heard if the switch is working correctly. If no click is heard, the switch might be damaged.

Common Causes

  • Internal damage to the trigger switch mechanism
  • Switch actuator is broken
  • Loose internal connection to the switch

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Gently squeeze the trigger and listen carefully for an audible 'click'.

  2. 2

    If the 'click' is not heard, the switch mechanism is likely damaged.

  3. 3

    The trigger switch will need to be inspected and potentially replaced.

  4. 4

    Ensure no debris is preventing the trigger from engaging fully.

Browse all codes in this manual (35)
Verified technical data. Last updated: April 2026

Related Faults

1 glowing red LED1 glowing red LED - Battery too hot or too cold1 glowing red light1 glowing red light — Battery too hot or too cold3 flashing red LED (AK Series)3 flashing red LED - Internal electronic issue (AK Series)
Source: Stihl Power Tools
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