Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
CASE 1
| One of the following conditions is met | A, B or C |
| A. Both of the following conditions are met | - |
| Internal engine off timer | 9.375 seconds or more |
| CPU clock elapsed time | 1.96608 seconds or more, and less than 8.323072 seconds |
| B. Both of the following conditions are met | - |
| Internal engine off timer | 18.75 seconds or more |
| CPU clock elapsed time | 8.323072 to 10.420224 seconds |
| C. Both of the following conditions are met | - |
| Internal engine off timer | Less than 9.375 seconds |
| CPU clock elapsed time | More than 10.420224 seconds |
CASE 2
| ECM started by internal engine off timer last trip | Yes |
CASE 3
| ECM started by internal engine off timer last trip | No |