Experiencing issues with your 2009 Acura Mdx Key Fob? You’re not alone. Many owners encounter problems ranging from reprogramming difficulties to physical damage. This guide, drawing from real user experiences, will help you understand common problems and explore solutions for your 2009 Acura MDX key fob.
One user shared their experience attempting to replace their key fob, highlighting common challenges. They initially opted for an aftermarket key fob, a popular choice for budget-conscious owners. However, they encountered difficulties with reprogramming, suspecting the aftermarket transmitter might be the issue. This mirrors the experience of many, where aftermarket options, while seemingly cost-effective, can introduce compatibility hurdles.
The user also considered the advice to switch to an OEM (Original Equipment Manufacturer) fob, suggesting that while the aftermarket case was decent, the internal transmitter might be the source of the reprogramming problem. This highlights a crucial point: for reliable performance, especially with electronic components like key fobs, OEM parts often offer superior compatibility and functionality.
A recurring physical issue mentioned was a key that sticks out slightly when the fob is closed. This isn’t a flaw of the case or spring, but rather inherent to the key hub mechanism itself. The user noted that the only definitive fix is replacing the entire metal key portion, an expensive undertaking. However, understanding the root cause can prevent unnecessary case replacements.
Even with a partially functional old fob (with a broken unlock button), the user found limited use. The “open power gate” feature, for example, wouldn’t work when the vehicle was locked, only when unlocked. While the “panic” button still functioned, its utility was minimal. Despite these limitations, the working lock function allowed them to repurpose the old fob for nightly vehicle locking.
Another point of frustration was encountered when attempting to disassemble the OEM key. The screws securing the swing mechanism were heavily secured with blue Loctite. This resulted in a sheared screw and a stripped screw, requiring extra effort to overcome. This detail is crucial for anyone attempting DIY repairs or component swaps on their 2009 Acura MDX key fob.
When considering aftermarket 2009 Acura MDX key fob options, it’s important to note variations in button icons. Some aftermarket fobs may feature an SUV liftgate icon, while others show a car trunk icon. These icons often correspond to specific Acura IEM part numbers, such as:
- 35111-STX-329 / 35111-STX-326 (likely complete key assemblies)
- 72147-STX-A12 / 72147-STX-A32 (transmitter only units)
These part numbers can be vital for ensuring compatibility when searching for replacements, whether OEM or aftermarket, for your 2009 Acura MDX key fob.
In conclusion, dealing with a 2009 Acura MDX key fob can present various challenges. From reprogramming aftermarket fobs to addressing physical wear and tear, understanding these common issues is the first step towards finding a solution. While aftermarket options are available, OEM parts often provide greater reliability and ease of programming. For physical issues like a sticking key, be aware of the potentially costly fix. By considering these points, you can make informed decisions when repairing or replacing your 2009 Acura MDX key fob.
