Last updated on April 13th, 2026 at 03:53 am

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Why Is My Traxxas ESC Blinking Red And Green?

A Traxxas ESC blinking red and green usually means the speed control is in an alarm state, most often because the low-voltage setting does not match the battery you’re running or the ESC needs to be reset.

In plain terms, the ESC is telling you it sees a battery, voltage, or setup problem and it is protecting the truck by cutting motor output. A red blink by itself often points to low voltage shutdown, while red and green together usually shows up with the over-voltage alarm on a NiMH pack. The fix is usually straightforward once you know which battery type you have and how the EZ-Set procedure works.

Why a Traxxas ESC blinks red and green

The most common cause is a mismatch between the battery type and the low-voltage detection setting. On many Traxxas setups, a NiMH pack can trigger the over-voltage alarm if low-voltage detection is left on. A LiPo pack, on the other hand, should normally keep low-voltage protection enabled.

Another common trigger is an improper shutoff or a button hold that leaves the ESC in an odd state. If the EZ-Set button was held too long when turning the vehicle off, the speed control can start flashing and refuse to act normally until it is reset.

Battery type	What the blinking usually means	What to do
LiPo	The ESC should normally keep low-voltage detection on.	Check that the pack is charged, then reset the ESC if needed.
NiMH	Red and green blinking often points to the over-voltage alarm.	Turn low-voltage detection off and reprogram the ESC.
Any pack	Flashing after a strange shutdown or failed setup sequence.	Run the reset procedure and verify the transmitter and receiver link.

If you want a quick refresher on pack types, RC battery basics can help make the LiPo and NiMH differences easier to sort out.

What the blinking means in real use

When the ESC sees a voltage condition it does not like, it protects the car by shutting down motor output. That is why the truck may stop moving even though the receiver and transmitter still appear powered.

On a ground vehicle, that protection matters because a LiPo pack should not be over-discharged. A NiMH pack can usually be run down more deeply without the same risk, which is why low-voltage detection often needs to be turned off for NiMH use.

That also explains why the same ESC can behave differently depending on the pack you plug in. The blinking is not always a bad part or a dead ESC. Very often it is just the electronics telling you the settings do not match the battery.

What to do when your ESC is blinking red and green

Start with the battery type. If you are running LiPo, connect the pack and power the car on. The ESC should show a steady green light when low-voltage detection is on. If you need to change the setting, hold the EZ-Set button until the light switches to red, then follow the reset steps below.

If you are running NiMH, the fix is usually to turn low-voltage detection off. That prevents the ESC from reading the pack as an over-voltage problem.

LiPo setup

Connect the LiPo battery to the ESC.
Turn the vehicle on.
Look for a steady green light when low-voltage detection is enabled.

If the ESC is stuck flashing, reset it and confirm the battery is fully charged.

NiMH setup

Plug in a fully charged NiMH battery.
Turn off low-voltage detection on the ESC.
Reset the ESC if the light keeps flashing red and green.
Recheck the throttle and receiver link before driving.

For a deeper look at pack care and why voltage behavior changes over time, see battery setup and maintenance.

How to reset your Traxxas ESC

If the ESC is flashing after a setup change or a NiMH battery swap, a reset often clears it. This procedure works with the EZ-Set button and the transmitter throttle positions.

Turn on the transmitter.
Disconnect the battery from the ESC, then reconnect a fully charged NiMH battery.
Press and hold the EZ-Set button until the ESC light turns green and then red. Release it as soon as it turns red.

The red light should flash once and then turn off. When that happens, pull and hold full throttle on the transmitter.
The red light should flash twice. Move straight to full reverse without pausing in the middle.
Keep holding full reverse, then press and hold the EZ-Set button on the ESC.

The light should go off for about 5 to 10 seconds, then turn steady red. You may also hear three beeps or a descending tone.
Release the button and transmitter trigger.

If the steps are completed correctly, the ESC should now show a solid red light and the vehicle should be ready to drive.

If the transmitter or receiver is blinking too

If the transmitter is blinking red and the receiver is also blinking red or green, you may be dealing with a link issue rather than just an ESC setting problem. That usually means the radio system is not talking to itself correctly.

A commonly used re-link method is to hold the EZ-Set button while turning on the transmitter, then release it when the transmitter LED flashes red slowly. After that, hold the receiver link button while powering on the model, then release it. When the transmitter and receiver LEDs turn solid green, check steering and throttle response.

If you want a refresher on the radio side of things, RC radio basics is a useful place to review transmitter and receiver behavior.

Solid red receiver light: dead receiver or signal problem?

A solid red receiver light does not always mean the receiver is dead. It often means the receiver is not getting a usable signal or there is a connection problem somewhere in the radio system.

Check the simple stuff first:

Make sure no water got into the receiver box.
Inspect the antenna wire for damage.
Confirm the battery in the transmitter is good.
Rebind the transmitter and receiver.
Check that all plugs are fully seated in the correct slots.

If nothing changes, try another receiver to confirm whether the receiver itself is the problem.

How to avoid the problem next time

Once the ESC is working again, a few habits can keep the flashing light from coming back. The biggest one is using the right low-voltage setting for the battery you actually run.

It also helps to keep an eye on battery condition and wiring. A loose plug, worn connector, weak battery, or poor binding between the transmitter and receiver can all cause confusing warning lights.

Good pack care matters too. If you are running LiPo packs, keep them charged and stored correctly. If you are running NiMH, make sure the ESC is set up for that chemistry before you drive.

More general habits for pack care are covered in battery setup and maintenance.

Traxxas BEC and ESC: are they the same thing?

No, they are not the same. The ESC controls motor power, while a BEC, or battery eliminator circuit, steps voltage down so the radio system can run without a separate receiver battery.

That distinction matters because the ESC may protect the motor circuit, while the BEC keeps the steering and radio gear powered. If the battery gets too low, the ESC can cut motor output but still leave enough power for the radio system to center the servos and keep control for a safe stop.

FAQ

Why is my Traxxas ESC blinking red and green?

It usually means the ESC is in an alarm state, most often because low-voltage detection does not match the battery type or the ESC needs to be reset.

Should low-voltage detection be on for LiPo?

Yes. LiPo packs should normally use low-voltage protection so the pack is not over-discharged.

Should low-voltage detection be on for NiMH?

No. With NiMH batteries, low-voltage detection is typically turned off so the ESC does not trigger the over-voltage alarm.

What does a solid red receiver light mean?

It usually means the receiver is not getting a proper signal. Check the bind, antenna, wiring, transmitter battery, and plug connections.

What if the ESC still blinks after a reset?

Recheck the battery type, battery charge, transmitter and receiver link, and all wiring. If the problem keeps coming back, the ESC or receiver may need to be tested one at a time.