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: 69
Likes: 21
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: 69
Likes: 21
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.
Administrator
Joined: Mar 2001
Posts: 367,704
Likes: 24,675
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Moved to C7 Tech.
Melting Slicks
Joined: Jan 2015
Posts: 2,103
Likes: 948
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.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
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.