Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC U0300: Internal Control Module Software Incompatibility: Action
RE-FLASH the PSCM software. Clear the DTC and repeat the self-test. If the DTC returns, install a new EPAS gear referring to STEERING GEAR -- 3.5L FRONT WHEEL DRIVE (FWD) , STEERING GEAR -- 3.5L ALL WHEEL DRIVE (AWD) or STEERING GEAR -- 2.5L NON-HYBRID AND 3.0L FRONT WHEEL DRIVE (FWD) .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.