How to change the battery of BYD car key
As BYD car sales continue to grow, more and more car owners need to know how to replace the car key battery. This article will introduce in detail the steps, precautions and frequently asked questions about replacing the battery of BYD car keys to help car owners easily complete this operation.
1. BYD car key battery replacement steps

1.Preparation tools: You will need a CR2032 button battery (common model), a small flat head screwdriver or a plastic spudger.
2.find key slot: BYD car keys usually have a small groove or gap for opening the key housing.
3.Open key case: Use a screwdriver or a pry bar to gently pry open the key shell. Be careful not to use excessive force to avoid damaging the shell.
4.Remove the old battery: Find the battery compartment, use a tool to gently pry out the old battery, and pay attention to the positive and negative directions of the battery.
5.Install new batteries: Place the new battery into the battery compartment according to the direction of the positive and negative poles, making sure it is installed securely.
6.Close the case: Re-close the key shell and make sure the buckle is in place.
2. BYD car key battery model and price reference
| car model | Battery model | Reference price (yuan) |
|---|---|---|
| BYD Han | CR2032 | 5-10 |
| BYD Tang | CR2032 | 5-10 |
| BYD Qin | CR2032 | 5-10 |
| BYD Song | CR2032 | 5-10 |
3. Precautions when replacing the battery
1.Battery model: Be sure to confirm that your car key battery model is CR2032, other models may not work properly.
2.Positive and negative direction: When installing a new battery, pay attention to the direction of the positive and negative poles. Installing it backwards may cause the key to become unusable.
3.Avoid damaging the casing: Be gentle when prying open the casing to avoid damaging the plastic parts of the key.
4.Test key function: After replacing the battery, test whether the unlocking, locking and starting functions of the key are normal.
4. Frequently Asked Questions
Q: What should I do if my BYD car key is out of battery?
A: If the key suddenly runs out of power, you can use the spare key or the vehicle's one-button emergency function (supported by some models).
Q: What should I do if the key still doesn’t work after replacing the battery?
A: It may be that the battery is installed incorrectly or the key itself is faulty. It is recommended to check the battery or contact the 4S store.
Q: How often should BYD car key batteries be replaced?
A: Generally it can be used for 2-3 years, the specific time depends on the frequency of use.
5. Summary
Replacing the BYD car key battery is a simple and low-cost operation that owners can easily complete by simply following the steps above. It is recommended to check the key's battery regularly to avoid daily use being affected by a dead battery. If you need further help, you can contact BYD's official customer service or go to a 4S store.
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