# 2018 Hyundai Sonata won't start but dashboard lights work, can jump start **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [November 20, 2023, 3:22pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885 "2023-11-20T15:22:58Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![jayre](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jayre](https://community.cartalk.com/u/jayre)\ **Post date:** [November 20, 2023, 3:22pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/1 "2023-11-20T15:22:58Z")
2018 Hyundai Sonata SEL, 38,000 miles Car won’t start but everything else lights up. Keyfob battery new. I can jump start it. Battery connection cleaned out and tight. Advance Auto tested the battery and said it’s healthy. It’s been over 5yrs so the warranty has expired. Any ideas? TIA ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 20, 2023, 3:27pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/2 "2023-11-20T15:27:08Z")
Check the battery connections to make sure they’re clean and tight. Tester ---
**Author:** ![jayre](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jayre](https://community.cartalk.com/u/jayre)\ **Post date:** [November 20, 2023, 3:30pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/3 "2023-11-20T15:30:10Z")
I did that too. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 20, 2023, 3:41pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/4 "2023-11-20T15:41:54Z")
Are you saying that the engine won’t crank over unless jumper cables are connected to the battery? Tester ---
**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\ **Post date:** [November 20, 2023, 4:07pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/5 "2023-11-20T16:07:06Z")
Get a new battery. 5 years old is ancient for a battery. I dont care what Advance told you They are not mechanics. ---
**Author:** ![jayre](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jayre](https://community.cartalk.com/u/jayre)\ **Post date:** [November 20, 2023, 4:15pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/6 "2023-11-20T16:15:44Z")
Tester, that is correct. ---
**Author:** ![jayre](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jayre](https://community.cartalk.com/u/jayre)\ **Post date:** [November 20, 2023, 4:16pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/7 "2023-11-20T16:16:10Z")
Hope that is the problem. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [November 20, 2023, 4:16pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/8 "2023-11-20T16:16:39Z")
Then, the battery needs replacing. Tester ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [November 20, 2023, 4:28pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/9 "2023-11-20T16:28:54Z")
Sounds like a battery to me also… ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [November 20, 2023, 9:34pm UTC](https://community.cartalk.com/t/2018-hyundai-sonata-wont-start-but-dashboard-lights-work-can-jump-start/193885/10 "2023-11-20T21:34:49Z")
Pretty good chance either the battery or starter motor needs to be replaced. If I had that problem I’d first measure the two voltages at the starter motor’s electrical terminals with key in “start”, probing from terminal to starter case. If both are at least 10.5 v and it doesn’t crank the engine, I’d replace the starter motor.