Horn relay problem
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Horn relay problem
Hi all! I’m sure this has been covered before but I can’t find it.
After exiting the car, the lights flash, the alarm arms and the horn is supposed to honk. Sometimes it does, most times it doesn’t, and sometimes it just gives a weak “squeak”.
Several years ago the dealer said they fixed it by replacing some relay. It worked fine for awhile but over time it’s back to the original problem.
The horn works fine by using the steering wheel button/switch.
Any ideas on what’s going on and how to fix it? If it’s indeed a relay, where is it located and how to replace it? I’m not a mechanic, I just wash it and drive it when my wife let’s me. 😎
Thanks in advance!
2019 Stingray 1LT
After exiting the car, the lights flash, the alarm arms and the horn is supposed to honk. Sometimes it does, most times it doesn’t, and sometimes it just gives a weak “squeak”.
Several years ago the dealer said they fixed it by replacing some relay. It worked fine for awhile but over time it’s back to the original problem.
The horn works fine by using the steering wheel button/switch.
Any ideas on what’s going on and how to fix it? If it’s indeed a relay, where is it located and how to replace it? I’m not a mechanic, I just wash it and drive it when my wife let’s me. 😎
Thanks in advance!
2019 Stingray 1LT
Advanced
Joined: Feb 2026
Posts: 81
Likes: 25
not sure where it is but was wondering, if it still has the original battery you might want to replace that and see what happens. Its life is near the end anyway.
Last edited by Vetteman Jack; Apr 26, 2026 at 11:03 PM.
Advanced
Joined: Feb 2026
Posts: 81
Likes: 25
I found this in google…..
On a 2019 (C7) Corvette, the horn relay is part of the Printed Circuit Board (PCB) inside the under-hood fuse box. It is not a standard, easily removable relay. If the relay fails, the entire fuse block usually needs to be replaced, though it is recommended to check for power issues in the fuse box and check the actual horns located under the nose.
On a 2019 (C7) Corvette, the horn relay is part of the Printed Circuit Board (PCB) inside the under-hood fuse box. It is not a standard, easily removable relay. If the relay fails, the entire fuse block usually needs to be replaced, though it is recommended to check for power issues in the fuse box and check the actual horns located under the nose.
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Melting Slicks
Joined: Jan 2015
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From: Fleming Island Florida
I have the same issue where the horn alarm chirp is weak or doesn't work intermittently. I read the Body Control Module sends a short duration pulse to the horn where the steering wheel horn button is a longer 12 volt signal. This suggests a possible bad horn assembly. Since the C7 has a dual horn, it adds doubt in my mind that both are weak. Either way, I'm planning to replace it. I'll report back with the results.
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
I found this in google…..
On a 2019 (C7) Corvette, the horn relay is part of the Printed Circuit Board (PCB) inside the under-hood fuse box. It is not a standard, easily removable relay. If the relay fails, the entire fuse block usually needs to be replaced, though it is recommended to check for power issues in the fuse box and check the actual horns located under the nose.
On a 2019 (C7) Corvette, the horn relay is part of the Printed Circuit Board (PCB) inside the under-hood fuse box. It is not a standard, easily removable relay. If the relay fails, the entire fuse block usually needs to be replaced, though it is recommended to check for power issues in the fuse box and check the actual horns located under the nose.
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
I have the same issue where the horn alarm chirp is weak or doesn't work intermittently. I read the Body Control Module sends a short duration pulse to the horn where the steering wheel horn button is a longer 12 volt signal. This suggests a possible bad horn assembly. Since the C7 has a dual horn, it adds doubt in my mind that both are weak. Either way, I'm planning to replace it. I'll report back with the results.
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Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Well, I replaced the battery but that didn’t help. Looks like no one has actually found a reliable fix so I’ll just put up with it for now.
It’s not critical to the operation of the car, just an additional indicator that the car is locked.
It’s not critical to the operation of the car, just an additional indicator that the car is locked.