DTC C0609-62: Electric Parking Brake Switch Signal Compare Failure [11/2021 - 03/2024]: Description
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
When the electric parking brake switch is pulled, a lock request signal is sent from the No. 2 skid control ECU (brake actuator assembly) to the parking brake actuator assembly. When the electric parking brake switch is pushed, a release request signal is sent from the No. 2 skid control ECU (brake actuator assembly) to the parking brake actuator assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| C0609-62 | Electric Parking Brake Switch Signal Compare Failure |
|
|
DTC stored | Brake/EPB | A | An electric parking brake system malfunction is displayed on the multi-information display. |
DTC DETECTION CONDITIONS: C0609-62
| Vehicle Condition | |||||||
|---|---|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | Pattern 5 | Pattern 6 | ||
| Diagnosis Condition | Vehicle is stopped | - | - | ◦ | - | - | - |
| Vehicle is being driven | - | - | - | ◦ | - | - | |
| During initial check | - | - | - | - | ◦ | - | |
| Parking brake switch is being operated | - | - | - | - | - | ◦ | |
| Malfunction Status | Open detected in parking brake switch circuit | ◦ | - | - | - | - | - |
| Short detected in parking brake switch circuit | - | ◦ | - | - | - | - | |
| Stuck parking brake switch detected | - | - | ◦ | ◦ | ◦ | ◦ | |
| Detection Time | 1 second or more | 1 second or more | 30 seconds or more | 1 second or more | 1 second or more | - | |
| Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | 1 trip | 3 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.