20 Most Recent 2003 Hyundai Sonata Questions & Answers

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My 03 Hyundai sonata 2.7 v6 gets stuck in 3RE gear how do I fix it

automatic transmission? we can not guess your skills the question is how a tech can fix it not you, you have no tools real. what means 3RE? (why the RE there)" ok typo day, 3RD (D is below E) got it. now and answer and told here 10000 times and googled 1million times. or more check all fuses then scan the PCm (TCM) for DTC errors then we look them up in the real service manual and amazing it tells you what to do next as in LOTS more tests with meters and gauges. stuck in 3rd gear means what.?
  1. shift lever stuck (as in will no move.
  2. in drive, car starts off in 3rd gear, now that be rare. but possible.
  3. in reverse cars goes forward but in 3rd gear.
  4. or coasting the transmission never goes below 3rd gear called engine transmission natural braking actions and auto downshift features. happens foot off gas pedal.
  5. or means overdrive or TCC lockup failing?
A/t boxes do lots of things, even wrong, but not told clearly here.
9/30/2022 2:38:00 PM • 2003 Hyundai... • Answered on Sep 30, 2022
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Hyundai sonata has a miss at highway speeds 2003 4 cylinder

https://www.6ya.com/sam_f165b52067a50f08
4/28/2019 5:07:39 PM • 2003 Hyundai... • Answered on Apr 28, 2019
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03 Sonata starts high RPMs then drops....repeats the whole time I drive

If check engine light is on you have a fault code in the computer take vehicle to autozone or similar and have them scan it for the code it is free this will give you a idea what is wrong
1/16/2017 2:51:31 AM • 2003 Hyundai... • Answered on Jan 16, 2017
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Had new timing chain put in and now have a bad vibration on right side

not very clear on question. on the right side of what, and is it whilst driving or stationary, idling or with revs?
10/12/2016 9:12:24 PM • 2003 Hyundai... • Answered on Oct 12, 2016
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Driver side door will not lock/unlock with the remote, but the other doors will.

no you needs a new lock actuator on that door its about $90 installed, all the locks are on same circuit . sorry about the bad news :(
5/1/2016 10:32:45 PM • 2003 Hyundai... • Answered on May 01, 2016
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How can I replace knock sensor?

Disconnect the sensor connector and unscrew it from the block.
4/28/2016 2:41:26 PM • 2003 Hyundai... • Answered on Apr 28, 2016
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1answer

How can I replace the knock sensor?

They are easy to replace. Disconnect the wire connector and then unscrew the sensor from the block.
4/28/2016 2:40:54 PM • 2003 Hyundai... • Answered on Apr 28, 2016
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Where is A/T relay

hi, you should buy a service manual of the product if you are getting the problem with your product from the reliable store which will help you in solving your problem here's the link http://www.reliable-store.com/search?type=product&q=2003+Hyundai+Sonata
4/20/2016 7:06:54 PM • 2003 Hyundai... • Answered on Apr 20, 2016
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Speedometer does not work

See if you a cam sensor
3/26/2016 10:49:39 PM • 2003 Hyundai... • Answered on Mar 26, 2016
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Need to know the colors of my ignition switch wiring harness for a 2003 Hyundai sonata

go to www.hyundaitechinfo.com and make a free account and login to that account and you can see all the mechanic information that the factory publishes.
7/19/2015 2:16:57 AM • 2003 Hyundai... • Answered on Jul 19, 2015
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2answers

I have a 2003 hyundai sonata and i dont have the

The 2003 Sonata is equipped with a 'starter KILL' burglar alarm system with disables the starting system (using a N/C 'contacts' configuration instead of a N/O contacts configuration). N/C=Normally closed, and N/O=Normally open contacts. When the alarm goes off with a MY Sonata, the only way to DISARM it is with the key fob (remote) originally programmed for it (unless you purchase a new remote & have it programmed for the vehicle at an authorized Hyundai Service Department). NOTE: So long as the keyless entry & burglar alarm system is functioning/operating normally, the alarm will keep going off and the STARTER KILL function will still prevent you from starting the vehicle. One option is left without purchasing a new remote and having it programmed.
1. When the alarm goes off, get into the vehicle and insert the ignition key into the ignition.
2. Turn the key to the 'RUN' position (NOT the ACC position) and wait for the alarm to STOP (usually about 3 to 5 minutes).
3. The engine should then start using the ignition key.

If this procedure doesn't work, the problem will need further diagnosis by a qualified/certified Hyundai Service Technician.

Hope this helps
5/2/2015 12:59:37 AM • 2003 Hyundai... • Answered on May 02, 2015
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4answers

Key not detected

Same issue here, Sonata 2011 GLS and no key found (but more and more often at winter time) At dealership they said....its 100% computer problem, we can change it for $900 but we dont guarantee it will work normal again. Replaced 2032 battery 3 times made no difference so i thought its a power issue somewhere. i left my car on parking for 2 days for test. Opened door and saw it again...key not found. I connected a booster cable from running car to battery and left it for 10 min to charge. AFter 10 min i had a surprise...key found and car started easily. So its the Hyundai Factory car power design issue. Now i need to change my alternator to cover my theory. thx. ___

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4/13/2024 7:39:37 PM • Hyundai Sonata... • Answered on Apr 13, 2024
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1answer

2013 hyundai sonata trunk opens by itself

2013 Hyundai sonata my trunk just randomly pops open and it's not the fob key
12/22/2023 9:53:08 PM • Hyundai Sonata... • Answered on Dec 22, 2023
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2answers

Hyundai Sonata. Looking for the fuel shut off switch on it. Does anybody know where it's located?

There isn't one. Fuel Shut Off Switches are only on Fords.

Where is the fuel emergency shutoff switch located on a ...

JustAnswer https://www.justanswer.com > Hyundai Dec 20, 2022 - There is no fuel shutoff switch on the 2013 Sonata. If it will not start, there must be another issue, which could be fuel related but not a ... 1 answer ยท Top answer: Hello, my name is ***** ***** I'll be helping you with your Hyundai Sonata. I You have a fuel pump relay and that is it. Google year make model fuse box diagram ..
4/16/2023 3:07:16 PM • Hyundai Sonata... • Answered on Apr 16, 2023
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