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Hyundai Tucson battery and alternator

10 messages,  Last post on Apr 27, 2009 at 9:11 AM

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#3 of 10 Re: battery replacement and procedure [greatcars] by greatcars Mar 06, 2008 (6:18 am)
Replying to: greatcars (Mar 04, 2008 1:33 pm) OK, I checked out Sears, Target, Kmart, Costco, Pepsboy and Walmart. The battery for 05 Tucson 2.7L engine is group size 124R and has 600 CCA (according to the book of Diehard and EverStart and Kirkland) but none of the store carries it.   On the original battery there is no specs or something. I did measure the physical size of the original battery and it has 8"Hx6 3/4"Wx10"L. In Walmart I found these battery MAXX-24S and MAXX-24FS (Gold, their highest rating, list price $73.88) have exactly same physical dimension and have CA 875 and CCA 700 and 12V specs and has 3 year free replacement and 9 year prorated wanrranty. I just want to make sure it CAN be used on the Tucson though it's NOT listed for Tucson on the EverStart book. I guess the Group Size is more than physical dimension but I don't know more than that. I had used a value (the lowest rating of them) EverStart battery on my old car for more than 5 years and it was excellent till the point I got rid of the old car. So for the Gold class battery it should be even better. It sucks Hyundai only gave 2 year warranty on battery. The prorated rate after 2 years still cost 70 bucks and who know what they will install. Any respons? Thanks. btw, I still can start the car as long as I don't leave it idle for a few days so I am not in rush to replace the battery. But the dealers said the battery is no good and needs replacement in last week visit. I can't rule out if the radio is draining the battert as some other poster reported or if the alternator has something to do with that.
#4 of 10 Tucson battery by greatcars Mar 10, 2008 (6:24 am)
It happened a couple of times that the remote key could not lock the car and I had to manually close each door. The battery may be low. Is this the sole reason?   Any response to the replacement of battery? I think I have to replace it very soon. The MAXX-24S and MAXX-24FS at Walmart look so good but they were not listed for Tucson even though they have higher and better specs than the same book listed for Tucson. Can I use them safely and realiably? Thanks.
#5 of 10 Radio draining the battery by greatcars Mar 10, 2008 (1:22 pm)
I copied this from another place:   airflyte, "Hyundai Tucson Maintenance and Repair" #10, 13 Jan 2007 12:57 pm#9   After my Tucson sits for two days, the battery goes dead. I took it to a Hyundai dealer and they showed me the Technical Service Bulletin for the Sonata, Tucson and Azera. The Bulletin number is 06-90-015, dated March 2006. The Bulletin states, "If the vehicle has to be stored for a long time, the power connector should be disconnected to prevent battery drain." I told the service manager that the car had only sat for two days, not for a long time. Their remedy was to pull the power connector (short connector) which is a 30amp fuse, located in the relay box passenger compartment. I would like to know if anyone else has this problem?   On another board I frequent, one Tucson owner had the same type problem you are describing. In his case the problem turned out to be a problem with the factory radio. Maybe your dealer should check that out. At the very least they should be able to determine what devices/accessories are still drawing current when the vehicle is off.   That bulletin 06-90-015 covers 2006-2007 model and said the radio is M280. But the M280 was used on 2005 model, too. So the battery problem on 2005 model is very likely caused by the radio, too. Replies to this message: wowzers17 (Apr 27, 2008 5:56 pm) pridgeway (Apr 27, 2009 9:11 am)
#7 of 10 Re: Radio draining the battery [greatcars] by wowzers17 Apr 27, 2008 (5:56 pm)
Replying to: greatcars (Mar 10, 2008 1:22 pm) TSB 07-90-007 came out in July 2007. It directly states:   "Some Tucson vehicles equipped with the M280 audio receiver may exhibit a discharged battery if left parked, without being started or driven, for 2-3 days or more."   It lists that a re-manufactured radio should be replaced (likely a previously broken one with the defect worked out).   Take that TSB number to your dealer, and they should be able to help you.   Search for that TSB number on the internet and you can actually obtain a direct printout of the TSB to take with you as well.
#8 of 10 defective radio on 06 tucson by blisowski Jul 01, 2008 (9:14 am)
thanks to edmunds i was able to have my radio replaced and eliminate dead battery problems. My car would go dead after a few days of not driving. The dealer said everything was fine but two weeks later same problem dead battery. I told of edmunds. com and similar problems they replaced m 280 radio and guess what--no more problems   THANKS EDMUNDS
#9 of 10 daisybuttons by daisybuttons Oct 27, 2008 (10:31 pm)
If you have a Hyundai Tucson 2005 or later-and are having battery going dead problems-most likely you do have a parasitic drain problem going on-I did-but my dealership denied it at first! they did replace my battery the one time-but after it would sit for a while it went dead also-the radio in my car was faulty-and it would make the computer think that it was on-even though I did turn it off-and everything else with it-I LEFT NOTHING ON!!! it would still drain the battery because of this radio-I just wanted to let everyone else know that may be your problem also-and it's nothing you are doing!! I almost lost my job-having to get up and try and jump this new car off-not expecting to have any problems with it-It has a good warranty but if the dealership won't recognize there's a problem-then you've just got to show them there is a problem! Mine got fixed-have had no problems since!-If they don't want to accept there is a problem-leave it with them and they'll see within a day or two-it won't start! hope ya'll get what you need out of these dealerships-you just have to work them! and don't let them have any slack!!! And by all means-THANK YOU EDMUNDS!!! I WOULD NOT HAVE EVER FOUND THIS PROBLEM!
#10 of 10 Re: Radio draining the battery [greatcars] by pridgeway Apr 27, 2009 (9:11 am)
Replying to: greatcars (Mar 10, 2008 1:22 pm) I have exactly the same problem with my 2007 Tucson. I have a battery charger permantly set up near my car so I can restart it in a hurry. It's a bit rediculous. I am going to store it at an airport in a few days so I'll probably have to unplub the battery before I leave. That will be difficult with a baby in a stroller at 5 a.m. but it will save me when I arrive home at 11 p.m. three nights later. Or I'll need to park near a power outlet somewhere! I'll look into the factory radio problem. Thanks for your advice. My problem is very randon. It only happens about once a week, but I don't use the car daily so it's probably those times I leave it for a couple of days.

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