KNOWN FAULTS · Toyota

Toyota Auris (I) 1.8 Hybrid common problems.

2006–2012 · Hybrid

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Clogged EGR and head gasket on the 1.8 hybrid (2ZR-FXE)Engine

Engine / equipment: 1.8 hybrid (2ZR-FXE): Prius III, Prius+ and Auris hybrid
Period mentioned: Approx. 2010–2015
Symptoms: Knocking or rattling on cold start, misfires (P0301–P0304), coolant loss and, eventually, a damaged head gasket.
Possible cause described: The EGR cooler and passages clog with soot; uneven gas distribution causes knock and misfires that end up damaging the head gasket. Toyota issued a technical bulletin (T-SB-0116-15) for the 2010–2015 Prius.
Check for the garage: Read the misfire codes, watch the coolant level and clean the EGR cooler, valve and manifold preventively; if coolant is lost with no visible leak, run a combustion-gas test.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Applies if: The Toyota USA bulletin does not list this model, but its hybrid battery is also cooled with cabin air through a filter.

Clogged hybrid battery cooling fan and filterHigh-voltage battery

Engine / equipment: Hybrid battery cooled with cabin air (intake next to the rear seat): Prius, Yaris, Auris, Corolla, C-HR, RAV4, Camry and others
Period mentioned: 2003 onwards
Symptoms: Hybrid battery cooling maintenance message, warning light with codes P0A80 or P0A7F, a noisy fan and less electric assistance; if ignored, the battery ages faster.
Possible cause described: Dust, pet hair or dirt block the filter and fan that cool the battery; so do objects covering the intake. Toyota USA issued bulletin T-SB-0074-20 (2003–2020 Prius and Camry, Corolla, Highlander, RAV4 and Mirai hybrids up to 2020) and recommends cleaning the filter every 5,000 miles (about 8,000 km).
Check for the garage: Clean or replace the filter and clean the fan before condemning the battery; keep the intake grille clear. At the garage, read the codes and, if needed, install the software Toyota specifies.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.