The completely redesigned 2024 Lexus GX features the new 3.4L twin-turbocharged V6 engine, bringing modern power to this luxury off-roader. When a P0304 code appears indicating a cylinder 4 misfire, understanding this new powertrain helps target effective diagnosis.
Understanding P0304 in the 2024 GX
The all-new 3.4L twin-turbo V6 replaces the previous V8 in the redesigned GX. Cylinder 4 is located on the rear of the left bank of this V6 configuration. The engine control module monitors combustion events through crankshaft position analysis.
New Platform Considerations
The 2024 GX represents a complete redesign with an all-new powertrain. First-year production may benefit from technical service bulletins as the platform matures. Misfires on new vehicles typically indicate component issues covered under warranty.
Diagnostic Steps
Access the cylinder 4 ignition coil on the left bank. Inspect spark plug condition. Check for boost leaks in the twin-turbo system. On new vehicles, verify all software updates have been applied.
Resolution Path
Warranty coverage applies to 2024 models. Have your Lexus dealer diagnose using factory equipment designed for this new platform. Component failures should be covered.