Bosch
Trigger Switch Failure
Vacuum does not respond to trigger, but battery indicator lights when inserted
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Worn or broken trigger microswitch, Broken trigger lever, Disconnected switch wiring, PCB trace damage at switch terminals
How to Fix / Troubleshooting
Safety first: Remove the battery before opening the handle.
- Check mechanical action: Squeeze the trigger and feel for resistance and a click. If it feels loose or does not return, the lever or spring may be broken.
- Inspect internally (if possible): Remove handle screws and carefully open the housing. Locate the trigger switch and verify that the actuator presses it correctly.
- Look for damage: Check for cracked plastic around the trigger, broken springs, or a physically damaged microswitch.
- Replace assembly: In most cases, the handle/trigger assembly or small switch PCB is replaced as a unit rather than repairing individual parts.
- Reassemble carefully: Ensure no wires are pinched when closing the handle.
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Repair Difficulty
Medium
3/5
Required Part
Handle / Trigger Assembly
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