Key “on” position to wake up the engine

Dear Doctor: You have previously mentioned that it is a good idea when starting a car to turn the key to the “on” position and wait a few seconds before turning the key to “start.” I have mentioned this to several friends who scoff at the suggestion. Your premise sounds logical and I would like to have something in writing for my friends to review. Mike

Dear Mike: There are a couple of reasons for turning the key to the “on” position before actually turning the key to the “start” position. First, when the key is turned to the on position, there is a wake-up call to the battery and computer. And as you may know, battery efficiency decreases as the ambient temperature drops down below 32 degrees. More importantly, the fuel pump primes the fuel system. — Junior Damato, Motor Matters

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