Does Accessory Mode Drain Battery Honda. Changing the Power Mode Use the ENGINE STARTSTOP button to cycle through power modes or start the engine. I called the dealer and was told that the batteries in these cars would drain after 5 to 10 min on accessory mode.
I couldnt get it to turn off nor could I get it to start. Guess they were right. I just turn the key once where the radio comes.
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I was actually warned by two different people at the dealership not to have the car in accessory mode for long because the battery in the car is small and will drain quickly with all the electronics in the car. Battery Draining While Driving. And of course when I left the car to call for assistance I. I have the radio on - on accessory mode in 10 minutes the battery is totally dead.
