⚠️ Toyota Altezza — Moderate misfuel risk
Petrol-only JDM sport sedan imports. Wrong fuel or water contamination requires draining before the fuel system ingests contaminants.
If the engine was not started
Do not crank the engine; arrange panel-access drain immediately.
If the engine was started
Inspect HP pump, rails, and injectors; replace filters and run fuel quality checks per Toyota TIS.
⚠️ Toyota position — Altezza
Altezza uses in-tank pump access from the rear seat area on most examples. Contamination repairs follow TIS / Techstream and are not factory warranty-covered.
Vehicle information
| Specification | Details |
|---|---|
| Make | Toyota |
| Model | Altezza |
| Market status | Common used Japanese import in New Zealand (not current NZ-new range) |
| Body styles | Sedan |
| Generations | XE10 (1998–2005) |
| Engines | Petrol: 2.0L straight-six, 3.0L straight-six (JDM offerings) |
| Fuel tank capacity | ~60 L (confirm in TIS) |
| Fuel system | Petrol direct or port injection depending on model year |
| Access method | Rear seat fuel pump access panel (typical) |
| Anti-siphon | Yes |
| OEM service portal | Toyota New Zealand — TIS / Techstream (authorised dealers) |
OEM access procedure
- Relieve fuel system pressure per Toyota service information (fuel pump relay/fuse, crank briefly if directed).
- Disconnect the battery negative terminal.
- Access the in-tank fuel pump module via the OEM access opening (rear seat or boot panel on most NZ-new and import models).
- Disconnect electrical connector and quick-connect fuel lines; cap lines to limit vapour release.
- Remove the pump lock ring with the specified tool; lift the module carefully to avoid damaging the level sender.
- Extract contaminated fuel with approved equipment; inspect the tank interior through the opening.
- Reinstall with a new pump O-ring/gasket; reconnect lines and verify no leaks before starting.
- Prime and clear codes per Toyota repair manual; road test when fuel quality is confirmed.
Additional notes
- Sold as Lexus IS in some export markets; NZ commonly sees JDM Altezza imports.
Frequently asked questions
I put diesel in my Altezza—what now?
Altezza is petrol-only. Do not start the engine and drain the tank using Toyota fuel module procedures.
Is Altezza the same as Lexus IS for fuel access?
XE10 IS shares the Altezza platform—access is typically under the rear seat; confirm in TIS for your VIN.
Need certified fuel contamination service?
Find an NZIFDA certified operator or read consumer guidance on wrong-fuel incidents.
Find an operatorFor consumers