Experiencing issues with your Lexus Gx470 Key Fob? It’s a common frustration for owners, especially when dealing with used vehicles. Many Lexus GX470 owners find themselves with only one key or a malfunctioning key fob, prompting the search for replacements. The original poster in our forum encountered a similar problem, purchasing aftermarket keys online, only to face a series of programming and compatibility headaches. Let’s delve into why aftermarket Lexus GX470 key fobs can be problematic and explore potential solutions.
The initial attempt to resolve the key issue involved purchasing ECCPP brand keys from Amazon. These were advertised as compatible replacements for the Lexus LX470 and GX470, specifically model HYQ1512V. However, upon taking them to a locksmith, it was discovered that the key chips were incorrect – type 68 instead of the required type 67 for the GX470. This mismatch rendered the keys useless, and unfortunately, due to being cut, they were non-returnable. The locksmith’s efforts to cut and program these keys, costing $150, were unsuccessful.
A second attempt was made with SCITOO brand keys, again from Amazon, still advertised for the Lexus GX470 and LX470, FCC ID 89070-60801 and HYQ1512V. Despite appearing to be the correct specification, these keys also failed to program due to the same chip incompatibility issue – type 68 instead of type 67. This highlights a significant problem with aftermarket keys: inconsistent or misrepresented chip types. Even though advertised as correct, the physical product may not meet the required specifications for your Lexus GX470.
Alt text: Close-up of aftermarket Lexus key fob packaging, highlighting potential inconsistencies in product specifications.
The locksmith, in this case, was knowledgeable and helpful, correctly diagnosing the chip issue and offering a solution by sourcing the correct type 67 chips. While the replacement chips allowed the keys to be cut and recognized by the vehicle’s immobilizer system, programming the key fobs themselves remained a challenge. Despite attempts using both manual methods and professional diagnostic tools, the keyless entry remotes would not program.
The root cause was eventually traced back to a seemingly unrelated issue – a pulled fuse. Replacing this fuse restored the security system, keyless entry, and memory functions, which were essential for key fob programming. This underscores the importance of checking basic vehicle systems, like fuses, when troubleshooting key fob problems. A seemingly minor electrical issue can prevent even correctly specified keys from programming properly.
Even after resolving the fuse issue, the aftermarket remotes still proved problematic, leading the locksmith to conclude that the remotes themselves were also incompatible or faulty. This experience serves as a cautionary tale regarding aftermarket Lexus GX470 key fobs. While they may appear to be a cost-effective alternative to genuine Lexus keys, the risk of incompatibility, incorrect specifications, and programming difficulties is significant.
Key Takeaways for Lexus GX470 Key Fob Issues:
- Verify Key Chip Type: Ensure aftermarket keys specify the correct chip type (Type 67 for many GX470 models). Visual inspection is not enough; testing by a locksmith before cutting is recommended.
- FCC ID and Part Numbers: Check that the FCC ID (HYQ1512V) and part number (89070-60801) match your original key fob or the Lexus specifications for your GX470 model year.
- Check Vehicle Fuses: Before assuming key fob failure, inspect relevant fuses related to the security system and keyless entry.
- Locksmith Expertise: A skilled locksmith with experience in Lexus vehicles can be invaluable for diagnosis and programming.
- Aftermarket Risks: Be aware of the potential for incompatibility and quality issues with aftermarket key fobs. While some may work, the risk of problems is higher compared to genuine Lexus parts.
Alt text: Image showcasing a Lexus GX470 key fob alongside both a master key and a valet key, emphasizing the different components of a vehicle key system.
While the original poster sought confirmation on the correct key specifications, the broader issue highlights the complexities of aftermarket key fobs. For reliable Lexus GX470 key fob replacement and programming, consulting a trusted locksmith or Lexus dealership may ultimately save time, money, and frustration. While aftermarket options exist, proceed with caution and prioritize verification of compatibility and specifications before purchase and programming attempts.
