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Water In The Boot

Water in the boot or spare wheel well usually enters through worn tailgate seals, light seals, a blocked drain or a leaking rear washer hose.

Normal risk

Not urgent, but fix it soon. Standing water causes rust, smells and damaged wiring.

Short answer · Why is there water in my boot?

Rubber seals around the boot lid or tailgate harden with age. Rear light units have their own seals that fail. Some cars have drains around the tailgate or sunroof that block with leaves. The rear washer hose passing through the tailgate can split. Water collects in the spare wheel well, where it often goes unnoticed.

On this page

Safe checks you can do

  1. Lift the boot floorCheck the spare wheel well for water.
  2. Inspect the seals and lightsLook for gaps, cracks or water marks.
  3. Pour water carefullyWith a helper inside, pour water over areas one at a time to find the leak.

Questions that narrow it down

  1. Only after rain or also after car washes?Pressure washing finds weak seals.
  2. Is there water near the rear lights?Light seals are likely.
  3. Does the rear washer work?A split hose can leak inside.

Possible causes

Listed without ranking. Use the questions above to see which ones fit your car.

  1. Worn boot or tailgate sealThe most common cause.
  2. Rear light sealWater runs into the boot.
  3. Blocked drainOverflows inside.
  4. Split rear washer hoseLeaks when washing.
  5. Damaged body seam sealerAfter repair or rust.

Questions about Water In The Boot

Can water in the boot damage electronics?

Yes. Many cars have modules and wiring under the boot floor.

How do I dry the boot?

Remove the water, dry the carpets and let the area air out; check for rust.