The Revolt RV400 is an incredible piece of electric technology in vehicular form. But let us keep it real; it has its quirks too!
The horn is an essential component of the Revolt RV400 e-bike but is often overlooked. This button is the safety tool that helps you alert others of your presence on the road.
If it does not work well, you may get frustrated! Wondering how to tell this. Well, it’s because my friend faced this frustration as well. When his horn malfunctioned, it felt strange, but soon, it became a little adventure in problem-solving itself.
This article is your detailed guide to knowing the various steps you can take, just like my friend, when your horn does not start. If you are facing a similar Revolt RV400 horn issue, this is all you need to get that horn shooting again!
1. Check the Battery Voltage
It was puzzling for my friend when he first discovered the Revolt RV400 horn not working. The horn seemed either too weak or unable to start at all. The rest of the bike was fine, though (phew!).
Now, like many of you fellow readers, my friend is not an expert in electric bikes. But even a newbie knows that the first thing to check is the battery voltage in the bike.
You may ask- how does this work? Well, a weak or dead battery connection can directly impact the horn’s performance. If the battery does not have enough juice, the horn will not function properly either. My friend grabbed a multimeter to check the voltage.
You can do this by simply connecting the multimeter to the battery. The threshold is a 60V reading or somewhere around it. If you are getting something different than that, your battery might need more charging. This part will also help when you are trying to fix the Revolt RV400 remote issue.
Now, my friend’s battery circuit check showed a normal reading, so the battery was not really the issue for him. However, if it is the issue for you, the horn will immediately get better and stronger. If your issue is not resolved yet, read on!
2. Inspect Wiring and Connections
The next step to fix the RV400 horn starting problem is to look into the wiring. Buddies, we all know how important it is to have solid electrical connections, especially on a bike. The wiring tends to wear out or come loose.
Since my friend does not have a deep technical background, he took the advice of his regular electric bike mechanic, who always suggests one must look into the wiring. Checking the wiring even helps when you are trying to fix the RV400 remote problem.
The mechanic said you should look for frayed wires or corrosion at the connection points. My friend now opened up the electric wiring panel to get to the inspection. Guess what? There was indeed a loose wire in there! This sneaky little fellow was fixed right away after that.
My friend fixed the wire by securing it back into the fuse box and tightening every connector around it. Now he tested the horn, but it was not really working as intended. Having learned from this, he soon knew that the Revolt RV400 electrical problems were a coincidental issue and something deeper is at work here.
3. Test the Horn Relay
Since the horn was still causing problems, my friend proceeded to another step he learned about from the internet. This is when the horn relay comes into the picture.
A horn system relay acts like the middleman, allowing the current to flow between the horn button and the RV400 horn itself.
If your relay has issues, the horn does not get the signal to start. Reading up on the internet revealed that it is easy to test the relay using a multimeter, too. Here is how you can do it:
✅ You must first locate the relay in the bike (use the manual guide)
✅ Disconnect it from the system.
✅ Use the multimeter to test the resistance.
Doing this helped my friend find faults within the horn relay itself.
4. Seek Professional Assistance if Necessary
As a final resort, my friend called in professional help in the form of a Revolt Motors mechanic who looked into why the RV400’s horn was not working. The professional ran a few electrical system diagnostics and found some minor wiring issues along with the dysfunctional horn relay.
My friend could not have fixed this on his own, and many times, you cannot either due to the unavailability of professional tools. Mechanics can help you catch such issues with ease and help the horn work again.
Final Thoughts
To fix your Revolt RV400 horn issue, start by checking the battery voltage, inspect wiring and connections for any loose ends, test the horn relay using a multimeter, and, if needed, seek professional assistance for further diagnostics.
Dealing with a horn issue on your Revolt RV400 can be annoying, especially if you are new to this stuff.
My friend found out that sometimes things have a straightforward fix, as shown in these RV400 horn repair tips, while other times, you seriously need to get complicated parts checked so your horn may be fixed properly.
