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.
Datum Description
- A datum is an imaginary horizontal plane that runs 2 ways to the vehicle:
Below
- Parallel
Calculate the height dimensions at right angles from the datum to a given control reference point on the underbody.
The company that develops height dimensions determines the location of the datum based on the equipment used. Different datum lines are established for the same vehicle. Add or subtract an equal amount from all height dimensions. Create a new datum line for your usage.
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.