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maintenance · reviewed answer

Refill dishwasher rinse aid and adjust the dose

Fill only the rinse-aid reservoir and wipe spills. Increase the setting for persistent water spots or poor drying; reduce it for rainbow film, excessive foam or residue, changing one level at a time.

Direct answer

Fill only the rinse-aid reservoir and wipe spills. Increase the setting for persistent water spots or poor drying; reduce it for rainbow film, excessive foam or residue, changing one level at a time.

What this covers

  • A dishwasher with a refillable rinse-aid dispenser
  • The exact condition described in the direct answer
  • Customer-accessible observations and controls

What it does not cover

  • ×A different model, region or software interface that contradicts the cited source
  • ×A displayed code with a separate manufacturer meaning
  • ×Live electrical, gas, sealed-system or battery-cell repair
Try in this order0 of 4 completed

  1. Establish the exact starting state

    Reversible

    Confirm the correct reservoir and read the local water-hardness/manual guidance.

  2. Separate the fault or decision boundary

    Reversible

    Separate hard-water spots from detergent film, etching and plastic items that retain droplets.

  3. Apply the narrowest correction

    Reversible

    Fill to the indicator, close the cap and change the dose one increment only.

  4. Verify before escalating

    Reversible

    Compare identical loads over two or three cycles before changing it again.

Evidence ledger

Sources behind this answer

Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.

01
Bosch Home AppliancesBosch owner support

Official Bosch appliance use, care, error and service guidance.

Exact questions

Common follow-ups

What is the short answer to “Refill dishwasher rinse aid and adjust the dose”?+

Fill only the rinse-aid reservoir and wipe spills. Increase the setting for persistent water spots or poor drying; reduce it for rainbow film, excessive foam or residue, changing one level at a time.

What should I check before changing anything?+

Confirm the correct reservoir and read the local water-hardness/manual guidance.

How do I know the action worked?+

Compare identical loads over two or three cycles before changing it again.

When should I stop?+

Do not put hand dish soap or unapproved chemicals in the rinse-aid reservoir.

Change recordAug. 17, 2026 — Added as a distinct maintenance intent with its own scope, diagnostic boundary, verification and first-party source.
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