2011 Hyundai Elantra touring. I crossed jumper cables to wrong battery posts.I caught the mistake quickly but now my display, radio and usb port no longer work.

SOURCE: replacing battery cables

Don't feel bad I had the same problem getting mine off and I have been a heavy equipment mechanic for 23 years . These cables are like nothing I have ever seen . Under the bell shaped terminal is a brass cone with 6 fingers and they are connected to the stud which turns when you try to loosen the nut because it is bottomed out . The way it works is when you tighten the nut the fingers grab into the battery post and draw the cone towards the post and locks it tight . It is almost impossible to loosen it once it corrodes up , As it spins it will break off the fingers and ruin the terminal . If you can pull it straight up once it has broke free by turning it you maybe able to work with it better . Hope this helps

SOURCE: dashboard gauges dont work after crossing jumper cables.

have you checked the fuses to make sure you didnt burn any out?

sylvesterkat

• 25 Answers
• Posted on Sep 21, 2009

SOURCE: I own a 2009 Hyundai Elantra and was told I could

I have used the Apple iPod cable with no problem in the Elantra USB port with an iPod Nano & iPod Classic. You have to change the music settings, skip songs, etc. from the iPod which is distracting while driving.

I purchased the cord made by Hyundai at the dealership, that plugs into both USB and aux port. The music titles, album info etc show up on the radio screen, and you can use the buttons on the radio to change the tunes, view artists, albums... (safer while driving!). I've seen sellers on eBay that sells the Hyundai made one (cheapest starts @ $24+ w/ s/h - link here) http://cgi.ebay.com/ebaymotors/NEW-HYUNDAI-2009-09-iPOD-INPUT-USB-AUX-AUDIO-CABLE_W0QQitemZ230379648893QQcmdZViewItemQQptZCar_Audio_Video?hash=item35a3b2777d&_trksid=p4506.m20.l1116, as well as copycat ones - I wouldn't buy a copycat one (my opinion).

Do you have a case on your iPods? I have experienced the "reading error" with the Hyundai cord on my son's iPod Classic (he has a leather case on it). It seems to do that because the plug going in to the iPod is not making full contact with the iPod because of the case. When he takes the case off and reconnects, there are no further problems.

Hope this helps, Good luck!

SOURCE: Radio no longer works. The car battery died, so we

check fuse may have gotten a spike when boosted battery

Testimonial: "Thanks! Helpful considering I know litttle about fixing car radios. But would like to learn more, so please tell me: 1)Can I buy and fix it myself?"

PAUL MC G

• 1280 Answers
• Posted on Nov 04, 2009

SOURCE: 2002 hyundai elantra radio and dome light not working

Then 1, bulbs are burned out
OR 2, the wiring is faulty.

Testimonial: "thanx for the solution. took the car to a repair shop and was told that the wiring was faulty. had the car rewired."