![]() ![]() I thought that once this keyfob runs out of battery, the other’s life will start. I have been using the same key fob on my i10 since day 1, only for locking and unlocking the doors, and have never had to replace the battery. I will sure go and check now for my 11 year old Hyundai i10 and 8 months old Jeep Compass. I didn’t know key fob batteries have well-calculated expiry dates. Here's what BHPian chillingmonk had to say on the matter: ![]() I now use them alternating on a monthly basis. Interestingly, the one I use regularly is still working without any signs of low battery (5 years and continuing), whereas the spare one was dead and had to replace the cell after 2 years, I chose Duracell this time, original came with Panasonic make. Here's what BHPian Agarwal_Aayush had to say on the matter:īoth my car keys use CR-2032 button cells. The cell pictures that OP has posted, I have seen them being used in home security remotes only. The Superb remote needed change after about 1.5 years. The Punto key-fob is still on its original cell and it has been 10+ years. Here's what BHPian lapis_lazuli had to say on the matter:īoth my car key-fobs have CR2032 cells. I keep reserve pair of spare batteries in the car. So I decided to purchase these batteries from Amazon/flipkart which last around a year too. After that the batteries were replaced from the Honda authorised workshop and they lasted just over an year. The original batteries which came as OEM lasted for around 2 years. Here's what BHPian Sushil Pingua had to say on the matter: Years lasted: Full 3 years till the expiry date mentioned on the battery. May I request everyone to mention what battery type their key fob comes with, and how long it lasted? This may help other BHPians. The spare battery may die at the same time, even if it is an unused sealed-pack. It will be better if you change the battery proactively, if it is reaching the expiry date. Learnings: Expiry date on key fob batteries are exceptionally well calculated. I didn't bother to test the untouched one from the previous set. Today, I received a new set and changed both the key fob batteries together. I was lucky that there was still some charge left in the other. Not surprisingly, one key fob died within one day. I started carrying both the key fob and the remaining one unopened cell everywhere in my laptop bag. I immediately ordered a new set as the led on one of my key fob was showing low intensity, even with this new cell. I then noticed that the expiry itself is July 2022. I replaced both the batteries with new ones from the set bought in 2019. I bought 5 batteries and changed both the key fob batteries in 2019, the expiry date mentioned on the battery was July 2022, which I didn't memorize by heart (mistake).įew days back, the battery on my main key fob died and I started using the spare one(which is used only by car cleaner on weekends), unfortunately, it also died within two days. My Tata Safari Dicor comes with 27A battery type. I faced a similar challenge recently and realized the importance of checking the battery health. Having the right spare battery for your key fob is critical for peace of mind on long drives. This key can open the driver's door in case the fob battery is dead or if the main battery in a car is discharged.BHPian MT_Hyderabad recently shared this with other enthusiasts. A conventional mechanical key might also be stored inside the fob. ![]() ![]() Check your owner's manual for directions. You may have to hold the smart fob closer to the "Start" button or insert it into a special slot to start the engine. So even if the fob has a weak battery, it should still start the car. Will the car start if the fob battery is weak? In most cars, the security (immobilizer) chip inside the fob works without a battery, but only from a very close range. In some cars, a warning message "key fob battery low" may also pop up on the driver's display. In cars with a push button start, a vehicle may not always recognize a smart key fob in your pocket or purse if the fob battery is weak. This means that you have to be closer to the car for the fob to work. What are the signs of a weak fob battery? As the fob battery becomes weaker, the transmitter loses its range. In most cars, a key fob battery is not rechargeable, and must be replaced once it loses its charge. The reason for this difference is that the smart key fob also has a receiver and has to communicate with the car more often when it's inside or near the car. ![]()
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