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.
2012 Toyota Matrix AWD L4-2.4L (2AZ-FE)FACTORY OEM SERVICE PROCEDURE
Timing Cover
TIMING CHAIN OR BELT COVER SUB-ASSEMBLY
Temporarily install the timing chain cover with the 12 bolts and 2 nuts.
Bolt Length
Fully tighten the timing chain cover with the 15 bolts and 2 nuts as shown in the illustration.
Bolt A - Torque 9.0 Nm (92 kgf-cm, 80 in-lbf)
Bolt B - Torque 25 Nm (255 kgf-cm, 18 ft-lbf)
Bolt C - Torque 55 Nm (561 kgf-cm, 41 ft-lbf)
Nut - Torque 11 Nm (112 kgf-cm, 8 ft-lbf)
Temporarily install the timing chain cover with the 12 bolts and 2 nuts.
Bolt Length
Fully tighten the timing chain cover with the 15 bolts and 2 nuts as shown in the illustration.
Bolt A - Torque 9.0 Nm (92 kgf-cm, 80 in-lbf)
Bolt B - Torque 25 Nm (255 kgf-cm, 18 ft-lbf)
Bolt C - Torque 55 Nm (561 kgf-cm, 41 ft-lbf)
Nut - Torque 11 Nm (112 kgf-cm, 8 ft-lbf)
Factory Service Tools
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.