Sticky high beams on a Sonata

Discussion in 'Hyundai Sonata' started by Voyager, Jan 24, 2011.

  1. Voyager

    Voyager Guest

    Well, I had a new one this morning with my 06 Sonata. For context, it
    was a tad cool last night with a night-time low of -19.9F and it was
    still -17 when I started the car. Nights like that are where the Mobil
    1 5W20 really earns its keep.

    Anyway, this cold did two things:

    1. Confirmed again how feeble the Sonata heater/defroster is. After 30
    minutes of driving with the temp on high and the fan on 3 (4 is just too
    noisy), the windshield was still frosted both inside and outside for its
    upper 1/3. But I have mentioned this here before over the years. :)

    2. When I first clicked on the high beams, there was a couple second
    pause before they came on. The stalk moved just fine, but the lights
    didn't come on right away. I had to dim them and when I went back to
    high the second time, they never came on. However, they were working
    find again on the way home tonight when the temps were about 10 above.
    I am guessing a sticky relay, but am not sure. Anyone else have this

    And the clutch barely came back off the floor when shifting. Very
    sluggish! Still can't beat my old Chevy truck in the cold. Clutch
    works fine at -20 and it has a heater that would warm a small mobile
    home! Note to Hyundai: Hire GM to design your HVAC systems. I have
    never had a GM car (not even a Chevette I owned) that didn't have a
    powerful heater and defroster.

    Voyager, Jan 24, 2011
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  2. Voyager

    BRUCE Guest

    Don't experience any of those problems with my 2011.
    BRUCE, Jan 25, 2011
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  3. Voyager

    Voyager Guest

    I am sure progress has been made in 5 years. How cold was it where you
    Voyager, Jan 25, 2011
  4. 1) People in the frozen north often put cardboard in front of
    the radiator. Its SOP. Need warm water for heat.
    2) The grease in the switch probably turned hard.
    3) Clutch, I don't know. Probably more hard grease.
    Paul in Houston TX, Jan 25, 2011
  5. Voyager

    Ed Pawlowski Guest

    My 07 and '10 have great heaters. Love that remote starter on days like
    this too. After 10 minutes I got in and was quite comfy at -10 outside.
    Couldt he V-6 use a different heater coil? Seems doubtful, but possible.

    Did not use the high beams, but I'll try in in the morning. It will still
    be below zero.

    I put new wiper blades on today too. The originals are 13 months and not
    doing a good job with the road spray. Topped off the fluid with the yellow
    Prestone stuff. Works much better than the blue when really cold.
    Ed Pawlowski, Jan 25, 2011
  6. Voyager

    Voyager Guest

    I suspect it unlikely also, but my I-4 has been a marginal
    heater/defroster/air conditioner from day one. The dealer could find
    nothing wrong, but it is far inferior to my other vehicles.

    For example, at 0 I can drive my 1994 Chevy Pickup with the heat on high
    and the fan OFF and still be reasonably comfortable. If I turn the fan
    on the lowest of its 4 speeds, it will quickly be so warm I have to
    starting lowering the temp control.

    I can drive the Sonata all the way to work with the heat on high and the
    fan on speed 3 of 4 and still not be as warm as in the truck. And it
    isn't like I have a short commute. I drive 21 miles which takes 30
    minutes give or take depending on traffic.

    Did you get a chance to try the high beams? I have not had a problem
    since, but then it has been above zero every day since that -20 morning.

    Voyager, Jan 29, 2011
  7. Voyager

    motormouth Guest

    My 2006 V6 version is the same. I also run full synthetic in it.
    There is barely any heat and never any defrost action until the car
    has been driven for 10 minutes at a decent rate of speed.

    I have come to the conclusion that the V6 is just so dense with metal
    and relatively low on the friction side that there's just not a lot of
    heat being made, and what is made is dissipated by the radiator.

    Even in the summer months, it seems to me the engine does not get
    overly hot.
    motormouth, Jan 29, 2011
  8. Voyager

    Ed Pawlowski Guest

    I have the climate control set on 72. Inside of five miles, the fan is on a
    lower setting and the interior is at temperature. It only stays on high for
    a few minutes when it initially starts to warm up. As for the defroster,
    it is OK, but a small portion of the upper corner on the passenger side
    seems like it could use a bit more heat and the wiper blade can use a bit
    more pressure as it leaves a band not wiped well. Had this same thing on my
    last Sonata and brand new wiper blades. Somehow, that band starts about two
    inches below the tip of the blade and is about 3" wide.

    At 10 below it took longer, but still warmed up to temperature.
    When I remembered it was already above zero and I had driven a few miles.
    It is going down to zero again this week so I'll try to remember to try
    Ed Pawlowski, Jan 29, 2011
  9. Voyager

    Voyager Guest

    Very little of the heat generated by an IC engine is from friction. By
    far the main heat source is the combustion of the gasoline. So, having
    a low friction engine would make a negligible difference on heat output.

    I run synthetic in all of my vehicles and the Sonata is the only one
    with an inferior heater.

    Voyager, Jan 29, 2011
  10. Voyager

    Eric G. Guest

    Something HAS to be up with your and Matt's cars. I am on my second V-6
    Sonata (a 2006 and now a 2010 model) and I have never had a single heat
    problem. In fact, although we only got down to 0 here in NJ when Matt
    was -20, I was toasty warm even with the window cracked. I don't warm
    my car up and drive about 2 miles to the highway on-ramp. The needle is
    already moving up before I get on the highway. And I have the fan on a
    MAX of "3" until on the highway when I drop to "1" and keep it there.

    Eric G., Jan 30, 2011
  11. Voyager

    hyundaitech Guest

    In regard to the headlamps, If I had to guess, I'd suspect the
    switch. Perhaps the grease got a little thick. I haven't seen any
    high beam relay issues, and it's unlikely that a relay would just
    spring into action without changing the electrical input.

    On the clutch, you may need a new master cylinder. Once in the late
    nineties and again about 5 or so years ago, there were series of
    problems where the fluid would leak past the cup washer in the clutch
    master cylinder in cold weather.
    hyundaitech, Feb 3, 2011
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