Experiencing a finicky key fob with your 2008 Lexus RX 350? Before you schedule a costly trip to the dealership, there’s a good chance you simply need a new key fob battery. This guide will walk you through the process of replacing the battery yourself, saving you time and money.
Signs Your Lexus RX 350 Key Fob Battery Needs Replacing
How do you know if it’s actually the battery? Here are some telltale signs:
- Decreased range: You find yourself standing closer to your car to lock or unlock it.
- Intermittent functionality: The key fob sometimes works and sometimes doesn’t.
- Dashboard warning: Your Lexus may display a “Key Fob Battery Low” warning.
- No response: The key fob is completely unresponsive, even when pressing buttons multiple times.
What You’ll Need for a 2008 Lexus RX 350 Key Fob Battery Replacement:
- New CR2032 battery: These are readily available at most hardware, drugstores, and online.
- Small flat-head screwdriver: This will be used to open the key fob casing.
How to Replace the Battery in a 2008 Lexus RX 350 Key Fob (Step-by-Step):
- Locate the release button: On the back of your key fob, find the small release button or switch.
- Separate the key fob halves: Press the release button and gently separate the two halves of the key fob. You may need to use a bit of pressure.
- Find the battery: Inside the key fob, you’ll see the round, flat CR2032 battery.
- Remove the old battery: Carefully pry out the old battery. Note the ‘+’ side facing up for the new battery placement.
- Install the new battery: Insert the new CR2032 battery, ensuring the ‘+’ side is facing up, just like the old one.
- Reassemble the key fob: Align the two halves of the key fob and press them together firmly until you hear a click, indicating they are securely closed.
Testing Your New Lexus RX 350 Key Fob Battery:
After replacing the battery, try locking and unlocking your Lexus RX 350 using both the key fob buttons and the door handle sensor. Everything should function normally.
“It’s surprising how many people rush to the dealership for a simple battery replacement. This guide empowers 2008 Lexus RX 350 owners to take control and save themselves some money,” says Jason Parker, Senior Automotive Technician at Car Clinic.
Still Having Trouble?
If you’ve replaced the battery and are still experiencing issues with your Lexus RX 350 key fob, there could be a different problem, such as:
- Faulty key fob: The key fob itself may be damaged.
- Programming issues: The key fob may have lost its programming.
- Vehicle receiver problem: There may be an issue with the vehicle’s keyless entry receiver.
In these cases, it’s best to consult a qualified mechanic or Lexus dealership for further diagnosis and repair.
Key Fob Maintenance Tips:
- Avoid dropping your key fob: Impacts can damage the internal components or cause the battery to become loose.
- Keep your key fob dry: Exposure to water can damage the circuitry.
- Don’t expose your key fob to extreme temperatures: Extreme heat or cold can shorten battery life.
By following these tips, you can help extend the life of your Lexus RX 350 Key Fob battery.
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