The P0304 code in your 2022 Mercedes-Benz GLE indicates the powertrain control module has detected persistent misfires in cylinder 4. Understanding the W167 generation's powerful engine options enables targeted diagnosis for this luxury midsize SUV.
Understanding P0304 in the 2022 GLE (W167)
The 2022 GLE W167 offers the M256 3.0L turbo inline-six (GLE 450) and M176 4.0L twin-turbo V8 in AMG variants. Cylinder 4 location differs—fourth position on the inline-six, right bank on the V8. Both use sophisticated EQ Boost mild hybrid technology.
Luxury Performance Considerations
The GLE delivers impressive performance while maintaining luxury refinement. Turbocharged engines demand robust ignition systems. Direct injection allows carbon accumulation. Quality components ensure the driving experience expected from this premium SUV.
Diagnostic Process
Identify your specific engine. Use Mercedes-compatible diagnostics for full data. Check EQ Boost system status. Locate cylinder 4 based on your configuration. Test ignition coil output and spark plug condition. Consider carbon buildup for higher-mileage vehicles.
Repair Implementation
Install Mercedes-approved spark plugs for your engine. Replace ignition coils showing degraded output. Address carbon accumulation if indicated. The GLE's character requires quality repairs.