![]() If it hadn’t, your door switch might be faulty. ![]() If you stop and get out of the car with the radio playing, check after a few minutes if it stops playing on its own. Lastly, your radio may be designed to stay on for a few minutes after the ignition is turned off and the doors shut. To fix this, you may need to replace the ignition cylinder. Wear and tear sometimes cause the switch to stay in the accessory position even after removing the key. While you are checking the ignition, make sure that the cylinder is not worn. If that happens, your radio will not switch off. The electronic ignition switch sometimes draws power when in the off position. If your main power wire is connected to a source that is always on, the radio will stay on all the time. It should be connected to a power source that only turns on when the car is started or when the accessory power is on. If your radio doesn’t turn off, you should first check the wiring of the head unit. Your Honda Odyssey radio won’t turn off because of these common problems: the head unit wiring is faulty, the ignition switch provides accessory power to the radio, a worn-out ignition cylinder, or your radio was designed to stay on after the car is switched off. So what are the main causes preventing your radio from switching off when it is supposed to? For one, a radio that stays on all the time, even after the car is switched off, can drain your battery power overnight, and when you come in the morning to drive to work, you will be faced with a low or dead battery. When your radio doesn’t turn off, it can be as problematic as a radio that won’t turn on. All it takes is to turn the radio on and hold the power button for two seconds for the radio to work normally. Most of the time, recalling its preset settings is quite a simple procedure. When your radio stops working, you may need to reset it. When the power cuts due to a dead or removed battery or a problem with the alternator, your radio will need to reset to work again. You may not even realize how much you rely on your radio while driving, so when it stops working, it feels like your whole car is no longer working properly.Īs a general rule, the Honda Odyssey Radio will stop working when it loses its reference voltage for some time. It is a hub for navigation, communications, and vehicle settings. ![]() These are available at most parts stores and can certainly prevent some headaches.The radio is more than just the entertainment center in a modern Honda Odyssey. You will also keep all of the station presets in your radio from going south. Stick it in your power outlet or cigarette lighter and enough voltage will be maintained while you have the battery disconnected that these problems can be avoided. It is simply a 9 volt battery attached to a accessory plug. During that process the engine may surge at idle, stumble on acceleration, even tend to stall.Ī simple work around for all of these problems is to buy a cheap device commonly sold as a memory saver. When the battery is reconnected the system reverts to the factory settings until it relearns. Loss of battery connection for any reason causes the ECM to lose its keep-alive memory and these settings. As you operate the vehicle over time the computers "learn" driving habits, sensor wear, etc and the Ecm makes minor corrections to compensate. ![]() In addition, certain computer systems used now, primarily the engine and transmission management ones, have a feature built into them called "adaptive learning". It can happen any time the battery is discharged, replaced, or simply unhooked to perform repairs. Having a radio lock up - anti-theft feature - is a very common problem with today's vehicles (as you just found out). ![]()
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