Engine maintence mode question
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Cadillac ELR Forum Discussion, Engine maintence mode question in Current Cadillac Vehicle Discussion; This morning, my ELR asked me if I wanted to start engine maintenance. This seems strange, since the engine has ...
  1. #1
    bgelber is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Jan 2008
    Location
    Lincoln, Nebraska
    Posts
    26

    Engine maintenance mode question

    This morning, my ELR asked me if I wanted to start engine maintenance. This seems strange, since the engine has been running quite a bit due to our recent cold weather. My Volt would run engine maintenance only if I had been 100% EV for months.

    When I told it to proceed, the engine came on along with a message about what % was complete. My Volt usually completed engine maintenance in a mile or less, taking a minute or so. I drove 5 miles in the ELR and the message showed only 45% complete. Then the engine shut off and went the car back to battery for the remaining 5 miles of my commute.

    Can anyone make sense of this?

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  3. #2
    Blastphemy is offline Cadillac Owners Fanatic
    Automobile(s): 2014 ELR
    Join Date
    May 2012
    Location
    Los Angeles
    Posts
    243

    Re: Engine maintenance mode question

    For comparison, if it helps, I've used about 7 gallons of gas since January 31st (almost all of that used in February), and I have never seen the maintenance mode warning. It seems very odd that you'd get maintenance mode so early in the life of the car, but perhaps the cold temperatures require more engine use than warmer climates?

  4. #3
    cstegall is offline Cadillac Owners Member
    Automobile(s): SRX, ELR, EXT(gone), ESCALADE(gone)
    Join Date
    Aug 2008
    Location
    DFW
    Posts
    53

    Re: Engine maintence mode question

    bgelber: Blast is right. I was told that cold weather climates will create a situation where the EMM/FMM will come on earlier than usual.

  5. #4
    Blastphemy is offline Cadillac Owners Fanatic
    Automobile(s): 2014 ELR
    Join Date
    May 2012
    Location
    Los Angeles
    Posts
    243

    Re: Engine maintence mode question

    If my ELR ever asked me to initiate Engine Maintenance mode, I would say NO. Then I would drive the car until the battery was depleted and drive in Extended Range mode (also known as CS - Charge Sustaining mode) for a gallon or two to make the ELR happy. Otherwise, you're just letting the ELR waste gas, which defeats the whole purpose of buying a Voltec drive for energy-efficient transporation. There's no law that you must charge the ELR every night.

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