2014 Acura MDX
Key Replacement - Save vs Dealer in San Diego

2014 Acura MDX Smart Key Replacement - Fast, Affordable & Professional

I got a call from a guy in Lakeside Proper who had been dealing with an intermittent no-start on his 2014 Acura MDX for about two weeks. Not a dead battery, not a bad starter. The push-button start just sat there sometimes. He had already replaced the fob battery twice because that was the first thing every forum thread told him to do.

When I pulled up, he met me in the driveway and walked me through it. Sometimes it started fine. Sometimes the dash threw a key-not-detected warning and nothing happened. He thought the fob itself had gone bad and was ready to buy a replacement outright.

I tested the existing fob first instead of assuming. The battery contact inside the fob had a slight outward bow on one side, just enough to make intermittent contact. The battery was fine. The contact was not doing its job consistently. I reshaped the contact, reseated the CR2032, and tested it several times in a row including deliberately walking him through the correct fob position near the start button. Every start, clean.

Then I explained what happens if the fob actually does fail down the road. On the 2014 MDX, adding or replacing a smart key is not something you do with a button sequence or an ignition cycle trick. It needs diagnostic equipment connected to the OBD port to register the new fob with the vehicle's security system. I carry that equipment in the van, and I do that work right here in Lakeside, same day, without a tow and without a dealer appointment a week out.

He did not need a new key that day. He needed someone who checked before replacing. That is the job.

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