Accessory mode in a Honda Accord is the power-only state that lets you run electrical systems without starting the engine.
What Accessory Mode powers in a Honda Accord
In Accessory (ACC) mode, the engine is off but many of the car’s electronics remain powered. Availability can vary by model year and trim, but the following are commonly operable when ACC is active.
- Radio and infotainment system, including Bluetooth audio and hands-free features
- Driver information display and dashboard lighting
- USB charging ports and other small electronics
- Power windows and sunroof (where equipped) may operate in ACC on some trims
In short, ACC provides access to low-power electrical systems without turning on the engine. For climate control or other systems that draw more power, you’ll typically need ON or the engine to be running.
Entering and exiting Accessory Mode
Entering Accessory Mode uses the push-button start, and the exact sequence can vary slightly by year and trim. The following steps reflect the common behavior on recent Honda Accords with a push-button start.
- With the vehicle off, press the Start/Stop button once without pressing the brake to activate ACC.
- Press the Start/Stop button a second time (still without brake) to switch to ON, powering more systems.
- To start the engine, press the brake and press the Start/Stop button once more; the engine will start and you return to ON.
- When you’re finished, press the Start/Stop button once to turn the electrical systems off and return to the fully off state.
Note: Battery health and trim differences can affect which features stay on in ACC. If in doubt, consult your owner’s manual for your specific model year and trim level.
Practical considerations and tips
Use ACC when you need to use radios, charge devices, or configure settings while parked. Be mindful that extended ACC use can drain the 12-volt battery, especially if the car is not regularly driven. If your battery is weak, you may notice systems dimming or the car failing to enter ACC reliably.
Summary
Accessory Mode in the Honda Accord is a convenient way to power select electrical features without starting the engine. It typically enables the infotainment system, displays, and small conveniences, while HVAC and other high-demand systems require ON or engine power. The exact behavior depends on the model year and trim, so check your owner’s manual for precise steps and capabilities.