Four vertical LEDs flashing

The same four lights flash; Bosch calls this a technical issue.

What it means

The same four lights flash; Bosch calls this a technical issue.

This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.

Switch off and disconnect electricity for at least two minutes.
If flashing returns, close the water supply, unplug and contact Bosch customer service.

Manufacturer source

Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.

If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.