Experiencing issues with your 2011 Acura MDX key fob? You’re not alone. Many owners encounter problems ranging from broken buttons to complete malfunction. Like many, I recently faced key fob troubles and decided to explore a DIY fix. My experience, along with advice from others, can guide you through replacing or troubleshooting your 2011 Mdx Key Fob.
Initially, I opted for an aftermarket key fob, priced around $40. Visually, the aftermarket version was quite similar to the original, albeit with a slightly different texture and lacking the Acura logo. However, programming the aftermarket fob proved to be unexpectedly challenging. Despite following online tutorials, reprogramming was unsuccessful. This led me to suspect the aftermarket transmitter itself might be the issue, especially since my original, though damaged, fob was still partially functional.
Based on this experience, and echoing advice from experts like Bogdan from AccuraAddicted on YouTube, opting for an OEM (Original Equipment Manufacturer) key fob seems to be the more reliable route for reprogramming success. To save some cost, a good compromise is to purchase an OEM fob and transplant your existing physical key into the new fob.
Image showing a replacement key fob for Acura vehicles listed on eBay.
Speaking of keys, if you notice your key blade protruding slightly when the fob is closed, it’s not a case or spring issue. This is inherent to the key hub design. Unfortunately, the only definitive fix is replacing the entire metal key portion, which can be expensive due to the laser cutting required, even though the keys themselves are relatively inexpensive blanks.
In my case, even with a partially broken original fob (unlock button not working), I found some continued utility. While the unlock button was defunct, the “open power gate” function would still operate if the vehicle was already unlocked. The “panic” button also remained functional, though less practically useful for daily needs. Despite its limitations, I repurposed my old fob as a dedicated “lock” device, keeping it inside the house for a nightly security check of all vehicles.
A further complication I encountered during disassembly was the screws securing the swing mechanism on the OEM key. These screws were secured with blue Loctite, making them exceptionally difficult to remove. In fact, one screw sheared in half, and another stripped entirely. Restoring these screws to functional condition required extra effort and patience.
When exploring aftermarket options, be aware that some fobs are advertised with a SUV liftgate icon, while others display a car trunk icon. These variations likely correspond to Acura IEM part numbers: 35111-STX-329 / 35111-STX-326. For just the transmitter unit, the part numbers are 72147-STX-A12 / 72147-STX-A32.
Image of an Acura key fob showing a car trunk icon, potentially indicating a specific model or function.
Image of another Acura key fob, this one displaying an SUV liftgate icon, suggesting a different model or functionality related to SUVs.
Image displaying the internal components of an Acura key fob, likely showcasing the circuit board and battery.
In conclusion, while aftermarket 2011 MDX key fobs are available, OEM fobs appear to offer a more straightforward path to successful reprogramming. Be prepared for potential challenges like key sticking and stubborn screws if you attempt a replacement yourself. Considering these factors will help you make an informed decision when addressing your 2011 MDX key fob issues.
