IsItAGoodCar

Common Problems with the
2009 Toyota Prius Mk3 (XW30)

We've identified 3 known issues that can affect the 2009 Toyota Prius Mk3 (XW30). 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
1
Moderate
1
Minor

The 2009 period has 1 more issue than the Toyota Prius Mk3 (XW30) average across all year periods.

All Known Issues

Brake Actuator Failure

SeriousBrakes

The internal pump fails, losing pressure assistance.

Estimated cost: £1,000–£2,500Affects: 2009–2015

Typical symptoms

  • •Constant pump buzzing
  • •Hard pedal
  • •Warning lights

What to inspect before you buy

  • ✓Frequency of pump operation (shouldn't be every press)

Hybrid Battery Degradation

ModerateElectrics & Electronics

The high-voltage battery pack gradually loses capacity over time, reducing fuel economy and electric-only range.

Estimated cost: £1,500–£3,000Affects: 2009–2015

Typical symptoms

  • •Reduced MPG
  • •Engine cycling more frequently
  • •Battery warning lights
  • •Loss of electric drive

What to inspect before you buy

  • ✓Request a hybrid battery health check from a Toyota dealer
  • ✓Monitor MPG over a few tanks

Headlight Condensation

MinorElectrics & Electronics

The headlight units can develop condensation inside, particularly on higher-mileage cars.

Estimated cost: £0–£200Affects: 2009–2015

Typical symptoms

  • •Visible moisture inside headlight lens
  • •Reduced light output

What to inspect before you buy

  • ✓Inspect headlights for fogging or moisture

Buying Tips for the 2009 Toyota Prius Mk3 (XW30)

  • ✓Check for ZE3 inverter recall completion.
  • ✓Listen for a barking/clicking sound from the brake system.
  • ✓Inspect for EGR clogging on high-mileage cars.
2010–2015 Toyota Prius Mk3 (XW30)

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Other Toyota Prius Mk3 (XW30) Year Periods

20092010–2015

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