Santa Fe (CM - 2007-12) :: 2008 - Gas Mileage Decreasing Over Time
Jan 19, 2015
I have a 2008 Santa Fe SE 4 cylinder that has been steadily losing gas mileage over the past few years. I had the fuel injectors cleaned a couple years ago but that did not work. When I bought it (used) in 2010, it was getting 22 mpg. It's now down to 17 mpg. The dealer recommends replacing the fuel filter (& lots of other parts). The car has just under 66,000 miles on it.
I did a search and also read through the fuel mileage thread that's on another Hyundai model forum, but nothing there addressed the slow, steady decrease, although I could have missed something .
There's no stalling, hesitation, slow acceleration, or other weirdness with the car otherwise. Driving habits and routes have not changed, although I might be driving a little slower than 5 years ago. I've had the codes dumped multiple times, with nothing showing up.
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I have a 2010 Ford Taurus. It has a mileage left to empty estimate. Normally the mileage to zero is greater than 400 miles immediately after a fill-up but has recently declined to around 360 miles. Does this indicate a need for tune-up? or should I look at something else?
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I have a 2009 Chevy Impala. It has 28,000 miles and since November my gas mileage averages between 20-24. I took the car to the dealership and they say nothing is wrong. This car was titled in Hawaii. I live in Wisconsin. Could the colder weather have something to do with the mileage or what else could it be?
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Back in 2012 when I first bought my PIP, the battery charge level as indicated by range was 17-18 miles. The energy to fill the battery has been consistently ~2.5-2.7 kwh.
Earlier this year it dropped to about 15 miles. And just recently it's dropped to about 13.5 miles. The weather has gotten cooler in the last few weeks here in SF, so I don't know how much of this is seasonal as I haven't been keeping track that closely.
I expect to see charge capacity loss over time for the main LiON battery and would like to know what to expect and if my PIP is typical. How much further decrease should I expect in the next couple years? Is your PIP doing better or worse than mine?
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Last oil change at the dealer (they're free) I informed the service desk of some knocking and grinding noises that are happening from time to time in the front end.. and fluid in the driveway.. they did the oil and said they saw nothing... so I have to go back next week for my last free oil change and before I made the appointment, I dropped in to see my regular mechanic.. steering rack is leaking on the passenger side and has been for a while as the fluid is down to the minimum line in the reservoir.
Made the appointment with the dealer, informed them about the noise again and fluid on the driveway.. again. Let's see what they say this time.
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Over the past year we have been noticing that the HVAC blower doesn't turn on from time to time. All settings in the control panel seem normal and the fan speed is turned on. Most of the time everything is working normally, sometimes when the car starts the blower isn't working and then starts after a minute of driving. Sometimes I notice the blower isn't working and I turn up the fan speed and after a few clicks it starts working normally for the remainder of the drive. And then sometimes the blower doesn't ever start and I need to turn off and restart the car a few times. When the blower hasn't been working the a/c compressor has been turning on, something in the blower circuit is failing.
There are five possibilities:
The HVAC controller isn't telling the blower to turn on
The power relay isn't always working
There is a wiring or connection problem
The blower motor itself isn't working
The power mosfet is failing.
What needed to be replaced?
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I have an 07 Prius great car I drive 92 miles/day round trip to work and back home everyday. I bought my Prius with 98k miles and it would get 42 to 45 MPG all the time.
I now have 172-k on it and it is still running great, but about 4 or 5 months it dropped to 36 to 38 mpg. I did the normal things, changed the plugs, air filter, checked tire pressure. No change in mpg. I thought it must be the HV battery. Because sometimes when I start it in the mornings the MFD only has the 2 pink or red bars showing but builds up to green within the first about 20 miles of driving.
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I am having this issue if it's one. With the fuel level below last quarter, I'm having the time of starting the engine longer (cranking time). I tried several times, leaving the fuel level reach the last quarter, with same result. Reaching that level of fuel the problem appears.
Another issue is that sometimes when the day is hot and the fuel level is not necessary below quarter, the starting time is longer too. It's a Santa Fe AWD 2.4L Automatic.
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I have a 2007 Santa Fe 3.3L v6 and the right brake light doesn't work all the time. When the vehicle is parked ignition on motor off the light works. Yet when driving I have been told my right brake light is out. I read that the turn signal switch assembly could be the problem.
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I have 3000 songs in folders on a USB stick. I understand how to get random play both within the folder, and for the entire USB. (Pushing and holding the button) What my frustration is is that everytime i take a phone call, or everytime i turn off the car, the random setting gets erased and it is back to sequential play. Is there a way to get this to a default permanent setting of "all random".
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I have a 2007 Hyundai Santa Fe and over the last 3 weeks I have been having a lot of trouble with my door locks. One thing is my automatic lock that happens when you hit 14mph, every time I hit 14mph my doors sound like they are locking 4 times, and every time I stop and take off again they sound like they are locking 4 more times. It is driving me crazy. Another issue I am having is my back passenger side door doesn't always unlock with the FOB or the button on the driver door, it has to manually be unlocked.
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I'm trying to figure out what has failed on my 2008 Santa Fe.
After stopping at a gas station today, my right turn signal came on and stayed on. By this I mean that the right turn arrow on the dash is illuminated and both the front and rear right turn signal bulbs are illuminated. They are all on steady, not flashing. Moving the turn signal stalk/switch does nothing. They all stay on when the car is turned off and the key removed. I have to disconnect the battery to get them to shut off. I tried pulling the turn signal, hazard and cluster fuses in the dash, but they had no effect. The switch for headlamps/park lights has no effect on the right side bulbs.
The left turn signal works normally.
Also, it may be related to having unplugged the battery a couple of times, but now the CD player shows "initializing" and I can't use it. The am/fm stereo works normally.
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My 2012 Santa Fe AWD Limited whines, all the time, from the time I start it until the time I shut it off. It gets louder with acceleration. What is that?
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I have a 2007 Santa Fe Limited and recently the main AC blower has been cutting on and off for long periods of time. The rear blower has not had any issues and has always worked. The main blower cuts off randomly and stays off until I tap under the glove box and then it normally kicks back on. Recently that has stopped working and I need to figure out what the problem is. Having the AC on or off does not effect this issue.
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My 2010 SF has 36000 km and I've noticed a "crunching" type sound every time I go over a steep ramp or a speed bump. The sound comes from the rear and never happens on smooth road. I took the car in for service last week and the dealership has ordered two rear replacement shocks -- they say it's premature failure.
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My 08 LS 460 use to have the a/c come on automatically every time. But now, I have to set it manually after each stop or engine turn off. Is it a fuse, sensor or ??
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The headlight beam height can be adjusted from inside the car. But even when not fiddling with the dial, I hear an electric motor sounding noise from them time to time, just a short <1s whirring sound. I listen with the bonnet open and I'm pretty sure it's coming from the headlights. Is this normal? is there any way I can stop it?
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i just bought a used 2006 scion xB (owned in Phoenix by a nice old lady since new) with only 14k miles in immaculate condition. I thought I had a gem, but I discovered the oil change history exceeds manufacturer time recommendation of every 6 months: changes occurred at 7 months, 17 months, 8 months, 15 months, and 11 months. Mileage recommendation is every 5000 miles; oil was changed after 2000, then 4500, 1500, 2800, and 3600. i read that oil oxidizes over time and if left in the engine for longer than recommended and used on short trips causes internal engine deposits, corrosion and sludge? If I now change the oil more frequently than recommended will it remove any such bad stuff? Should I be worried?
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I have an 04 F150 Heritage. For the last couple of months the odometer has been acting funny. Sometimes the LEDs will light up and display the mileage but most of the time it will not. When it does I can tell that it is still adding up the miles so that part is working . The problem seems to be in the LED readout.
One mechanic told me that I would have to take out my entire display and send it off for repair. The repairs could cause my odometer to go back to 0. This doesn't seem right to me.
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The other day, I had occasion to try to start my '08 Ltd, and there was no starter response to the key. Everything lit up and didn't dim when turning the key. Jiggled the key a few times, no change. Jiggled the shift lever a few times, no change. Turned the key a few more times, and it started. Yes, the vehicle was definitely in Park at the time.
This one has an automatic, so I'm assuming it was either a shift interlock switch (aka Neutral Safety Switch) or possibly the ignition switch itself, but as noted, neither responded to my ham handed approach to solving the problem. First time, it took about half a dozen start attempts. The second time, only three.
Haven't had the problem since then, but then again, I haven't been cycling the ignition as much as I was that day (probably 20 start stop cycles). Now I'm just wondering where and when it will bite me again. Some of the places I take this vehicle to the boonies in the Rocky Mountains would cost me dearly in tow charges.
Encountered this on an earlier CM model? I don't recall ever seeing this mentioned here over the years.
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Have 2008 Santa fe with a driveline hum noise. Originally thought is was a wheel bearing so I replaced what I thought was the suspect ones (1 in front and 1 in the back). Noise still there! Carrier bearing on the drive shaft? Front axle shaft? I'm at a lose.
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