⚠️ Toyota manufacturer position
Toyota/Subaru service manuals document fuel pump access via rear seat panel on this platform. Misfuel is misuse excluded from warranty.
Vehicle information
| Make | Toyota |
|---|---|
| Model | 86 / GR86 |
| Market status | Sold new in the US 2012–present (Scion FR-S 2012–2016, Toyota 86/GR86 thereafter) |
| Body styles | Coupe |
| Generations | ZN6 (2012–2020), ZN8 GR86 (2022–present) |
| Engine options | Gasoline: 2.0L and 2.4L flat-four (premium gasoline recommended) |
| Fuel tank capacity | 13.2 gal (50 L) |
| Fuel system | Gasoline port injection (Subaru-Toyota joint platform) |
| Access method | Fuel pump access panel under rear seat |
| Anti-siphon | Yes |
| Service portal | Toyota Technical Information System (Techinfo.Toyota.com) |
Misfuel risk Moderate
Performance coupe with premium gasoline recommendation; diesel mis-fill or E85 without flex-fuel calibration requires draining.
If the engine was not started
Do not start; drain before fuel pump primes.
If the engine was started
Replace filter, inspect injectors, and verify octane suitability after drain.
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 trunk panel on most US models).
- Disconnect electrical connector and quick-connect fuel lines; cap lines to limit vapor 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.
Notes
- Joint development with Subaru—some procedures reference Subaru service information.
Related models
- Subaru BRZ
Frequently asked questions
Does the GR86 take diesel?
No. US 86/GR86 models require gasoline only.
Is the FR-S the same as the GR86 for fuel procedures?
Yes. Scion FR-S, Toyota 86, and GR86 share the same fuel system access approach on the same platform generations.
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