Motormouth: Reprogramming a key fob

Q: I recently replaced the original battery in the key fob for my 2010 Kia Sedona. The car does not respond to the fob now. The battery shop confirms that the fob is working properly. Does a battery change necessitate a reprogramming of the fob, and if so, at what cost?

A: Reprogramming? Probably. Cost? Maybe nothing. First, check your owner’s manual. A typical procedure requires inserting the key into the ignition. You turn it on and off three to five times and then press any key on the fob to pair it to the vehicle.

Q: I recently bought a new SUV, and among other things, the dealer raved about a “fabulous” safety and security package they could add to the vehicle for the “low, low” cost of $999. Among other things it includes nitrogen-inflated tires. Do I need nitrogen-inflated tires? Do I want them? Do they wear better? Are they really safer? What else do I need to know about them?

A: No, no, no and no. There may be some minor advantages, but I don’t think they are worth the money. It’s not a panacea. The air we breathe is about 80% nitrogen.

Q: I have lost a key fob to my 2020 VW Atlas. Is it possible to get another one any other place than the dealer?

A: Yes. Contact some local locksmiths. Many carry fobs and usually can program them. You also can find aftermarket key fobs online, but they may not always the best products.

Q: The odometer for our 2012 Chevy Cruz just rolled over 100,000 miles and the “replace timing belt” warning appeared. What is the function of the timing belt, and how important is it to have it replaced?

A: The timing belt connects the crankshaft to the camshaft. Pistons drive the crankshaft. Valves are driven by the camshaft via the timing belt. Together they do a wonderful dance. If the timing gets off, the pistons crash into the valves. The valves poke holes in the pistons. The engine is transformed into a boat anchor.

Bob Weber is a writer, mechanic and ASE-certified Master Automobile Technician. His writing has appeared in automotive trade publications, Consumer Guide and Consumers Digest. Send automotive questions along with name and town to motormouth.tribune@gmail.com.