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.
2021 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE
Wheel Alignment: Inspection: Notes
Check the following items before performing the wheel alignment measurement.
- Tire inflation pressure
- Uneven wear of RH and LH tires, or difference of sizes
- Tire runout
- Excessive play and wear of ball joint
- Excessive play and wear of tie-rod end
- Excessive play of wheel bearing
- Right and left wheel base imbalance
- Deformation and excessive play of steering link
- Deformation and excessive play of suspension parts
Check, adjust and measure the wheel alignment in accordance with the following procedures.
| 1 | Suspension height (front and rear wheels) | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>SUSPENSION HEIGHT . |
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| 2 | Camber (front wheel) | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>CAMBER . Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT>FRONT CAMBER . |
| Camber (rear wheel) | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>CAMBER .
NOTE:
Rear camber cannot be adjusted. If the value exceeds the difference range between right and left, check the suspension parts and connections for deformation. If defective, replace with new parts
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| 3 | Caster (front wheel) | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>CASTER . |
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| 4 | Adjustment of difference between right and left steering angles | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>STEERING ANGLE . Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT>ADJUSTMENT OF DIFFERENCE BETWEEN RIGHT AND LEFT STEERING ANGLES . |
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| 5 | Front wheel toe-in | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>FRONT WHEEL TOE-IN . Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT>FRONT WHEEL TOE-IN . |
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| 6 | Rear wheel toe-in | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>REAR WHEEL TOE-IN . Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT>REAR WHEEL TOE-IN . |
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| 7 | Thrust angle | Inspection: Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION>THRUST ANGLE . Adjustment: Ref. to FRONT SUSPENSION>Wheel Alignment>ADJUSTMENT>THRUST ANGLE . |
Factory Service Tools
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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.