Unit leaks water from base and E08 or a leak icon appears on the display

Safety first: Unplug the carpet cleaner and do not operate it while leaking. Water inside the unit can cause electric shock.

• 1. Remove tanks and dry exterior
  • Take out the clean and dirty water tanks.
  • Wipe the exterior dry so you can identify new leaks.
• 2. Inspect tank seals
  • Check the clean water tank cap, valve, and perimeter seals for cracks or deformation.
  • Replace any damaged gaskets or caps with Bosch-compatible parts.
• 3. Check internal hoses
  • Remove the side or bottom covers to access internal solution hoses.
  • Fill the clean water tank and reinstall it.
  • Without powering the unit, observe for drips from hose joints, clamps, or the pump body.
  • Tighten clamps and replace cracked hoses.
• 4. Inspect leak sensor tray
  • Many Bosch wet appliances have a leak tray with a float or conductivity sensor.
  • Dry the tray completely and ensure the float moves freely.
  • If the sensor is corroded, replace the leak sensor assembly.
• 5. Test carefully
  • Reassemble, add a small amount of water, and briefly power on while monitoring for leaks.
  • If leaks persist from the pump housing or internal manifolds, stop use and have a technician replace the affected components.