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.
Link System
If ignition switch is turned to ON position with air bag sensor assembly connectors disconnected, or if vehicle battery is removed with ignition switch in ON position, system will determine this condition as a failure and will automatically call the Lexus call center. When an accidental call is made automatically, access call center and ask them to cut off the line.
To prevent this, perform the following when doing work related to air bag sensor assembly or battery:
- Disconnect connectors of Mayday ECU and back up battery before disconnecting air bag sensor assembly. Mayday ECU is located at left front upper corner of luggage compartment next to GPS antenna.
- Ensure ignition switch is in OFF position when removing battery.
- If no signal has been received from air bag sensor assembly since ignition switch was turned on, a service call will be made.
- If good signal reception from air bag sensor assembly after ignition switch is turned on is interrupted, an emergency call will be made.
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.