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D/\rK•650
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Haven't heard anything like that. Battery must bad/defective. Im pretty sure most of those last "long time".
LouG
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As long as it doesn't die the morning you're setting off on an interisland house move, with two carloads of household goods, the fob doesn't work, you can't remember the manual opening system and the manual's locked in the car.
St Google to the rescue.
St Google to the rescue.
Skye
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Could've just been a poor battery that needs replacing. But some use scenarios could drain it.
If you have an in-car charging pad, DO NOT place the fob on or near the pad. The exchange of electricity could permanently damage the fob. Keep it away from all charging pads, induction charging systems.
Keep the fob out of the car when not in use. There's an induction coupler in the cupholder for the engine immobilizer. It's OK to put the fob here. Interaction with this coupler is actually needed to start the car. But I wouldn't leave the fob in the vehicle when not in use or extended periods, like overnight in the garage.
Keep the fob off any key chains, out of pocket (if possible) if walking around. The fob is active/armed when moving. The fob will go to sleep after 30 seconds or so without motion. Most walk around with the fob in-pocket, purse or backpack for the life of the car without an issue. But someone on their feet all-day and always moving, could be an additional drain.
Keep the fob 10ft / 3m from the doors and trunk when not in use. There are induction couplers in the door handles and trunk lid, radiating outward. Within these ranges, the sensors send a Low Frequency interrogation signal to the fob, asking it to authenticate with the car. It could be a near constant discussion between the door, fob and receiver in the car's rear parcel shelf.
Saying that, if the fob is near any LF sources, like Radio Frequency IDentification readers (chip scanners. warehouse, veterinarian office, secure facility with card readers), distance it from those.
To prevent interaction with anything except when needed, purchase a faraday pouch. It's a simple thing that will enhance security, isolate the fob and will prevent any unnecessary drains when not in use.
The odds are slim, but you could have a cruddy fob. If you've done everything imaginable but continue to drain batteries, swap to the second fob. If the problem continues, it could be something you're doing, something in the environment. If the problem stops, it could be a poor fob from the supplier. Discuss a replacement with the dealer, as part of the warranty.
If you have an in-car charging pad, DO NOT place the fob on or near the pad. The exchange of electricity could permanently damage the fob. Keep it away from all charging pads, induction charging systems.
Keep the fob out of the car when not in use. There's an induction coupler in the cupholder for the engine immobilizer. It's OK to put the fob here. Interaction with this coupler is actually needed to start the car. But I wouldn't leave the fob in the vehicle when not in use or extended periods, like overnight in the garage.
Keep the fob off any key chains, out of pocket (if possible) if walking around. The fob is active/armed when moving. The fob will go to sleep after 30 seconds or so without motion. Most walk around with the fob in-pocket, purse or backpack for the life of the car without an issue. But someone on their feet all-day and always moving, could be an additional drain.
Keep the fob 10ft / 3m from the doors and trunk when not in use. There are induction couplers in the door handles and trunk lid, radiating outward. Within these ranges, the sensors send a Low Frequency interrogation signal to the fob, asking it to authenticate with the car. It could be a near constant discussion between the door, fob and receiver in the car's rear parcel shelf.
Saying that, if the fob is near any LF sources, like Radio Frequency IDentification readers (chip scanners. warehouse, veterinarian office, secure facility with card readers), distance it from those.
To prevent interaction with anything except when needed, purchase a faraday pouch. It's a simple thing that will enhance security, isolate the fob and will prevent any unnecessary drains when not in use.
The odds are slim, but you could have a cruddy fob. If you've done everything imaginable but continue to drain batteries, swap to the second fob. If the problem continues, it could be something you're doing, something in the environment. If the problem stops, it could be a poor fob from the supplier. Discuss a replacement with the dealer, as part of the warranty.
Last edited:
Alan Applegate
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Every single thing made by man suffers from an occasional baby failure (in this case a five year shelf life notwithstanding). This obviously includes silver button type batteries. For example, I also own a 2019 Ranger, and like the Mustang, it comes with two fobs. The one I hardly use was the first one to fail due to a bad battery. The other one I use daily is still working. At ≈$5 a pair, it isn't worth complaining about.
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