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.
2008 Lexus IS 350FACTORY OEM SERVICE PROCEDURE
System Diagram
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
ITEM SPECIFICATION
| Item | Detail |
|---|---|
| Number of BEAN connected ECUs*1 | 20 |
| Number of CAN connected ECUs*1 | 10 |
| Number of AVC-LAN connected ECUs*1 | 6 |
| Gateway function between BEAN and diagnosis | Gateway ECU |
| Gateway function between BEAN and AVC-LAN | Gateway ECU |
| Gateway function between BEAN and CAN | Gateway ECU |
| ECU in charge of vehicle customization information | Gateway ECU |
| Protocol | CAN, BEAN and AVC-LAN |
| HINT *1 Optional ECUs are also included. |
|
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.