Are you experiencing issues with your 2021 Lexus RX 350 key fob? A common culprit for a failing key fob is a dead battery. Replacing the battery in your Lexus RX 350 key fob is a straightforward process that can restore your remote’s functionality, allowing you to lock, unlock, and start your vehicle with ease. This guide will provide you with essential information about your Lexus key fob and how to address battery replacements, ensuring you maintain seamless access to your vehicle.
The key fob we’re discussing is compatible with several Lexus models including the Lexus RX 350 (2016-2021), Lexus RX 450L (2020-2021), and Lexus LX 570 (2019-2021). This genuine OEM Lexus smart key fob, often identified by part number 89904-0E160 or 899040E160 and FCC ID HYQ14FBB, is a high-quality replacement option. Alternative part numbers such as 89904-0E170H, 899040E170H, 89904-48C30, and 8990448C30 are also compatible with these vehicles. Knowing these numbers can help you verify you are getting the correct replacement.
This key fob is designed for Lexus vehicles equipped with a push-to-start system. It features four buttons: Lock, Unlock, and Panic, providing standard keyless entry functions. Importantly, it uses a CR2032 battery, a widely available and inexpensive button cell battery. When your key fob starts to become less responsive, or the range decreases, replacing this battery is often the first and simplest solution.
While this replacement key fob comes with a new CR2032 battery included, it’s crucial to understand that it does not include the emergency insert key. If you require a new emergency key, it can be purchased separately. Furthermore, programming is necessary for this key fob to function with your 2021 Lexus RX 350. This programming is typically performed by a professional automotive locksmith or your local Lexus dealership. The cost of the key fob itself does not include this programming service.
This smart key fob is also known by various names such as a proximity key, keyless entry remote, or smart car key replacement. Regardless of the terminology, it serves as a vital component of your vehicle’s security and convenience system. To ensure compatibility, always verify the Manufacturer Part Number and FCC ID, as remotes may appear similar but are not always interchangeable.
If you are uncertain whether this key fob is the correct match for your 2021 Lexus RX 350, compatibility checks are available. Providing your VIN number along with your vehicle’s make, model, trim, and year allows for accurate verification. This service can help you avoid purchasing an incompatible key fob, ensuring a seamless battery replacement and key fob integration experience for your Lexus. You can usually access compatibility checks through online chat, phone, or messaging services provided by key replacement specialists.
