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.
Pinion Factor Procedure: Procedure
Using the following steps, the pinion factor can be checked and/or reset using the DRBIII®:
- Select TRANSMISSION system, then MISCELLANEOUS FUNCTIONS, then PINION FACTOR. The DRBII® will display the current tire size.
- If tire size is incorrect, press the ENTER key and then select the correct size.
- Press the PAGE BACK key to exit the reset procedure.
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.
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