Date registered: Oct 2012
Vehicle: 1989 560SL; 2014 E350; 1960 190SL-sold; 1996 280C-sold
Location: Mid Hudson Valley, NY
Mentioned: 0 Post(s)
Quoted: 108 Post(s)
Short-term(?) Smart Key Battery Life
I'm curious about a trivial matter on my 2014 E350, but Iím guessing this would apply to any recent year model so Iím asking my question here.
The car is just one year old this month and has about 11,000 miles. Just after Jan 1, I started getting a dash message that the battery in the Smart Key needs replacement, and I get the same message no matter which key fob I have with me. Itís not a problem to get new batteries, and I found some instructions on how to replace them.
What I am wondering, however, is whether itís typical to have the batteries run out this quickly, and I find it curious that they both are running out at exactly the same time, even though I keep one in my pocket and the wife keeps the other in her purse as a backup.
There is some indication on the net that Keyless Go can shorten the life of batteries, but itís never been a problem in other cars weíve had with Keyless Go. In fact, in other current and previous vehicles with Smart Keys and Keyless Go, the battery message on the dash didnít appear for 3-4 years or longer.
I canít find any information on MBUSA, and thereís little info elsewhere on the net except for buying replacement batteries &/or instructions on battery replacement.
Can anyone suggest whether this just a fluke for this set of batteries in this car, or should I expect to have to change these yearly, and have other owners experienced this kind of short term battery life with M-B Smart Keys?
When out on the road, it's always best to watch out for Pot holes, Sink holes, and those other Holes!
Robert AKA: EEEEZY
You can't get us confused. I'm also "Nice", but NYYYCE is NEVER "Easy"!