Experiencing issues with your 2011 Acura Mdx Key Fob? Many owners encounter problems ranging from button malfunctions to complete failure, often leading to the need for repair or replacement. Understanding the common issues and your options is the first step in getting back full control of your vehicle’s access and security.
One common problem is button failure. If you’re finding that some buttons, like the unlock button, are no longer working, you’re not alone. This can be particularly frustrating when features like the power liftgate become inaccessible because they rely on the unlock function. While the lock button or panic button might still function, a partially working key fob significantly reduces convenience.
When considering a replacement, you might be tempted by aftermarket key fobs due to their lower price point. These are readily available online for around $40, and while they may look similar to the original equipment manufacturer (OEM) fob, there can be downsides. Some users report difficulties in reprogramming aftermarket fobs to work with their Acura MDX. This could stem from the aftermarket transmitter itself being less reliable.
The reprogramming process, usually straightforward for most vehicles, can become a stumbling block with aftermarket fobs. Experienced individuals who have replaced key fobs on numerous vehicles often find that immobilizer chips and laser-cut keys are the typical challenges, not the reprogramming itself. However, with some aftermarket Acura fobs, the transmitter might be the issue preventing successful reprogramming.
For a more reliable solution, consider an OEM Acura key fob. While potentially more expensive upfront, an OEM fob is designed specifically for your 2011 Acura MDX, increasing the likelihood of successful programming and long-term functionality. If you choose this route, you can potentially save on costs by transferring your existing, correctly cut key blade into the new OEM fob. The key cutting process for Acura keys can be expensive, whereas the key blanks themselves are relatively affordable.
Another point to consider is the physical key itself. If your physical key blade sticks out slightly when folded into the fob, this is often due to the key hub mechanism within the key, not the case or spring. The only definitive fix for this is replacing the entire metal key portion, which can be costly due to the precision cutting required.
For those considering keeping their old fob for partial functionality, be aware of limitations. If the unlock button is broken, features like the “open power gate” will not work when the vehicle is locked. The panic button might still function, but its practical use is limited for most drivers. However, even with a broken unlock function, a fob with a working lock button can still be useful as a dedicated lock device, especially for nightly security checks.
Finally, when disassembling your OEM key fob, be prepared for potential challenges with the screws holding the swing mechanism. These screws are often secured with blue Loctite, and attempting to remove them can lead to stripping the screw head or even shearing the screw. Care and appropriate tools are necessary to avoid damaging the fob during disassembly.
When exploring aftermarket options, pay attention to the button icons. Some aftermarket fobs may show a SUV liftgate icon, while others display a car trunk icon. These likely correspond to Acura IEM part numbers 35111-STX-329 and 35111-STX-326 respectively. For transmitter-only replacements, the part numbers 72147-STX-A12 and 72147-STX-A32 are relevant.
In conclusion, while aftermarket 2011 Acura MDX key fobs offer a tempting lower price, the potential for reprogramming issues and questions regarding long-term reliability should be carefully considered. Opting for an OEM key fob, while more expensive, often provides a more dependable and less frustrating solution for regaining full key fob functionality for your Acura MDX.
