# 2021 Jeep Wrangler - HVAC issue **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** jeep\ **Created:** [January 12, 2023, 9:58pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466 "2023-01-12T21:58:42Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![NHJjC](https://avatars.discourse-cdn.com/v4/letter/n/e68b1a/32.png) [@NHJjC](https://community.cartalk.com/u/NHJjC)\ **Post date:** [January 12, 2023, 9:58pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/1 "2023-01-12T21:58:42Z")
2021 Jeep Wrangler. No heat or defrost. Humming sound from engine. Temperature gauge up and down. Took it to the dealer who filled it with antifreeze until part came in. Dealer said this was a common problem and getting part was the issue. We were notified that part would be in next week. Still no heat or defrost and humming is worse. Checking coolant. ---
**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:** [January 13, 2023, 10:29pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/2 "2023-01-13T22:29:17Z")
Ask your shop the name of the part they are waiting for, post here. > [@NHJjC](#): > > temperature gauge up and down. Are your referring to the dashboard engine-coolant temperature gauge? During the “up” phase, how high up on the scale is it going? ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [January 15, 2023, 7:18pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/3 "2023-01-15T19:18:01Z")
> [@NHJjC](#): > > Took it to the dealer who filled it with antifreeze until part came in. Dealer said this was a common problem and getting part was the issue. We were notified that part would be in next week. Still no heat or defrost and humming is worse. Any chance you please be just a little more vague? ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [January 16, 2023, 5:35am UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/4 "2023-01-16T05:35:53Z")
> [@NHJjC](#): > > Dealer said this was a common problem and getting part was the issue. We were notified that part would be in next week. Still no heat or defrost and humming is worse. Checking coolant. You should not be driving this vehicle. You should have left it at the dealer, this would ensure your vehicle would receive the first part to arrive. > [@George\_San\_Jose1](#): > > Ask your shop the name of the part they are waiting for, post here. Do you believe you might have one in your inventory? ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [January 16, 2023, 4:46pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/5 "2023-01-16T16:46:07Z")
Your explanation is vague, but you definitely don’t want to be driving this car if the coolant is still low. That can cause serious engine damage. ---
**Author:** ![eddo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/eddo/32/2594_2.png) [@eddo](https://community.cartalk.com/u/eddo)\ **Post date:** [January 17, 2023, 5:53pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/6 "2023-01-17T17:53:53Z")
> [@NHJjC](#): > > 2021 Jeep Wrangler. No heat or defrost. Humming sound from engine. Temperature gauge up and down. Took it to the dealer who filled it with antifreeze until part came in. Dealer said this was a common problem and getting part was the issue. We were notified that part would be in next week. Still no heat or defrost and humming is worse. Checking coolant. are you just letting us know? or seeking advice/input? ---
**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\ **Post date:** [January 17, 2023, 7:02pm UTC](https://community.cartalk.com/t/2021-jeep-wrangler-hvac-issue/188466/7 "2023-01-17T19:02:20Z")
> [@eddo](#): > > are you just letting us know? Just bored waiting for “the part”.