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Cause Corrective measures
magnetic interference (e.g. WiFi transmit-
ters).
Bluetooth® cannot be activated
Battery voltage too low Change the batteries or battery pack
Measurement result implausible
Target surface reflection not distinct (e.g.
water, glass).
Cover the target surface.
Laser beam output (8) and/or reception
lens (9) are covered.
Keep the laser beam output (8) and/or re-
ception lens (9) clear
An incorrect reference level has been set. Select a reference level that is appropriate
for the measurement.
Obstruction in the path of the laser beam. The laser point must be fully on the target
surface.
The display remains unchanged or the measuring tool reacts unexpectedly when
the measuring button or the buttons are pressed
Software error. Remove the batteries/rechargeable batter-
ies, reinsert them and restart the measur-
ing tool.
The measuring tool monitors correct functioning in every measure-
ment. If a defect is detected, the display will indicate only the symbol
shown opposite. In this case, or if the above-mentioned corrective
measures cannot rectify an error, submit the measuring tool to the
Bosch after-sales service via your dealer.
Maintenance and Servicing
Maintenance and Cleaning
Only store and transport the measuring tool in the protective bag provided.
Keep the measuring tool clean at all times.
Never immerse the measuring tool in water or other liquids.
Wipe off any dirt using a damp, soft cloth. Do not use any detergents or solvents.
Take particular care of the reception lens (9), which must be handled with the same level
of care you would give to a pair of glasses or a camera lens.
Bosch Power Tools 1 609 92A 4P1 | (17.01.2019)