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Discussion Starter · #1 ·
I purchased a 2001 Toyota minivan in 2000. I had it for 15 years. During that time, I never had to replace the FOB batteries in either of the units. I have had a 2006 Toyota minivan for 11 years now and have never had to replace the FOB batteries either.

I purchased my 2016 Sonata PHEV in January 2016. I was amazed this morning when I turned off the engine and received a message that my Smart key Battery was low and needed to be replaced! I am amazed that the battery is going out after only 2-1/2 years. I dug out my owner's manual. According to the manual, the Smart Key takes what looks to be a very common battery (CR2032). I went ahead and ordered the batteries from Amazon. It is interesting as according to Amazon site, the batteries can't be shipped via air so it takes 4 or 5 days to receive them.

Are others finding that the Smart Key Batteries last only a couple of years? From now on, I will make a point to go ahead and replace them every couple of years.
 

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206 Posts
Discussion Starter · #4 ·
I purchased a 2001 Toyota minivan in 2000. I had it for 15 years. During that time, I never had to replace the FOB batteries in either of the units. I have had a 2006 Toyota minivan for 11 years now and have never had to replace the FOB batteries either.

I purchased my 2016 Sonata PHEV in January 2016. I was amazed this morning when I turned off the engine and received a message that my Smart key Battery was low and needed to be replaced! I am amazed that the battery is going out after only 2-1/2 years. I dug out my owner's manual. According to the manual, the Smart Key takes what looks to be a very common battery (CR2032). I went ahead and ordered the batteries from Amazon. It is interesting as according to Amazon site, the batteries can't be shipped via air so it takes 4 or 5 days to receive them.

Are others finding that the Smart Key Batteries last only a couple of years? From now on, I will make a point to go ahead and replace them every couple of years.
Just wanted to conclude this post with the actual replacement of the batteries in my smart keys. I went onto YouTube and watched videos showing how to replace the batteries. The physical key pulls out and then you can use the one end of it to pry open the shell. The small end fits into the indent area and then you rotate the key and the shell opens. Once you have the shell into two halves, you take off a rubber seal and then under it, you pull out a circuit board. This exposes the battery. You take note of its orientation so you can insert the new battery with the correct side up.

YouTube also has videos detailing what you can do if you are stuck with a dead smartkey. The manual key can be inserted into a slot on the drivers side door. To start the car, you use the smart key (rather than your finger) to push the start button.

Once I replaced both batteries (it was great how much easier replacing the second one was compared to the first), I then went out to the car with just one key to make certain it was functioning properly. I then tested out the other key.

Has anyone else had to replace the battery in their smart key?
 
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