Typical Enabling Conditions
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
COLD START MONITOR
| All of the following conditions are met | - |
| Battery voltage | 10.5 V or higher |
| Time after engine start | 1 second or more |
| Engine coolant temperature (for cylinder head side) at engine start | Less than 60°C (140°F) |
| Soak time | 0 second or more |
| Accumulated mass air flow | 5810 g or more (Changes depending on the difference between the engine coolant temperature and outside air temperature at engine startup) (except Mexico Models) 4389 g or more (Changes depending on the difference between the engine coolant temperature and outside air temperature at engine startup) (for Mexico Models) |
| Engine | Running |
| Fuel cut | Off |
| Intake air temperature sensor circuit fail (P0112, P0113) | Not detected |
| Engine coolant temperature sensor (for cylinder head side) circuit fail (P2184, P2185) | Not detected |
| Difference between engine coolant temperature (for cylinder head side) at engine start and intake air temperature | Less than 40°C (72°F) |
SOAK MONITOR
| All of the following conditions are met | - |
| Battery voltage | 10.5 V or higher |
| Engine | Running |
| Soak time | 5 hours or more |
| Either of the following conditions is met | 1 or 2 |
| 1. Engine coolant temperature (for cylinder head side) | 60°C (140°F) or higher |
| 2. Accumulated mass air flow | 11620 g or more (except Mexico Models) 8778 g or more (for Mexico Models) |
| Engine coolant temperature sensor (for cylinder head side) circuit fail (P2184, P2185) | Not detected |
| Soak timer fail (P2610) | Not detected |