RELX Ace Issues and Fixes: 10 Common Problems Solved (Guide)

Your RELX Ace worked fine yesterday. Today it’s blinking red, tastes burnt or won’t hit. Annoying? Yes. A lost cause? Usually not.

This guide covers the most common RELX Ace issues and fixes in plain English. The RELX Ace is a rechargeable, prefilled disposable vape. It holds 20 ml of e-liquid, delivers up to 20,000 puffs in Eco mode, and gives you three power modes (Boost, Smooth and Eco). It also has a smart display that shows battery level, e-liquid level and the active mode, plus a USB-C port and a mesh coil. It comes in 20 mg and 50 mg nicotine salt.

One thing to know before you start: the RELX Ace is a closed system. You can’t refill it, and you can’t swap the coil. So most problems come down to four things: battery, airflow, condensation or the coil reaching the end of its life.

The good news? You can sort out many of them at home in minutes. Long-lasting devices are a big part of why disposable vapes are so popular in Dubai, so nobody wants to bin one early.

Quick RELX Ace Troubleshooting Checklist

10 Common Problems of RELX Ace Vapes

1. RELX Ace Blinking Red Light

What happens: The indicator flashes red, and the device stops firing or fires weakly.

Possible causes:

• Low battery (the most common reason)
• Puff-protection cut-off after a very long draw
• A temporary electronic glitch
• A warning state triggered by a fault

How to fix a RELX blinking red light:

1. Check the battery reading on the display.
2. Plug the device into a working USB-C cable and a standard phone charger.
3. Let it charge and watch whether the indicator changes.
4. Unplug it and take a normal, short puff.

When to contact support: If the red light keeps flashing after a full charge, treat it as a device fault, not a battery issue. Check the user manual in your box for the exact light pattern, because patterns differ between models. This applies to every flavor, including RELX Ace Strawberry Burst.

2. Burnt Taste When Using Boost Mode

What happens: The vapor suddenly tastes harsh, dry or burnt, usually during heavy boost sessions.

Possible causes:

• Boost runs at higher power and burns through e-liquid faster.
• Back-to-back puffs don’t give the wick time to soak up liquid.
• The e-liquid is nearly finished.
• The coil has simply reached the end of its life.

How to fix it:

1. Stop vaping the moment you notice the burnt taste.
2. Give the device a few minutes to cool and let the wick re-soak.
3. Check the e-liquid level on the display.
4. Switch to Smooth or Eco mode and take slower puffs.

A burnt taste means the wick ran dry and the cotton got scorched. Once a coil is properly burnt, vaping more won’t bring the flavor back. Sweet, creamy flavors such as RELX Ace Taro Ice Cream taste best when you pace your puffs, so don’t chain-vape them on Boost. Chain vaping is one of the common disposable vape mistakes that kills a device early.

3. RELX Ace Screen Shows E-Liquid Percentage Dropping Too Quickly

What happens: The e-liquid reading falls much faster than you expected.

Possible causes:

• Long, frequent draws
• Heavy use of Boost mode
• The reading is an estimate, not a precise measurement.

How to fix it:

1. Look at your habits. Boost and long drags use far more liquid than Eco.
2. Check for leaking around the mouthpiece or base.
3. Judge by flavor and vapor too, not just the percentage.

The display estimates usage from your puffs rather than measuring the liquid, so treat the number as a guide. Also remember that the 20,000-puff rating applies to Eco mode. If you mostly vape on Boost, you’ll get fewer puffs. Rich flavors like RELX Ace Pistachio Delight are tempting to enjoy on Boost, so expect the number to drop faster.

4. RELX Ace Fails to Activate When Inhaling

What happens: You take a draw, and nothing happens. No vapor, no light.

Possible causes:

• The silicone protective cap is still on the mouthpiece or base (common with a fresh RELX Ace Double Apple straight out of the box).
• Blocked airflow openings
• Condensation around the airflow path
• A completely flat battery

How to fix it:

1. Make sure you’ve removed both silicone caps.
2. Check the visible airflow openings for lint or dust.
3. Wipe the mouthpiece and outer airflow area with a clean, dry cotton swab.
4. Charge the device and try again.
5. Take a gentle, steady draw. A very weak or very hard pull may not trigger the sensor.

Safety note: Never push pins, toothpicks or anything sharp into the airflow channels, and don’t try to open the device.

5. RELX Ace Produces Weak Vapor or No Vapor

What happens: The clouds get thin, or vapor stops completely.

Possible causes:

• Low battery
• E-liquid is almost finished.
• A worn-out coil
• Blocked airflow

How to fix RELX no-vapor production:

1. Check the battery level and charge it.
2. Check the e-liquid percentage.
3. Clear any visible debris from the airflow openings.
4. Switch modes. Boost gives the biggest clouds.

Quick way to tell the difference: If vapor gets weak and the battery reads low, charging will fix it. If vapor is weak on a full charge and the flavor tastes flat or burnt, the coil or liquid is done. In that case, the device has reached the end of its life. Bold flavors like RELX Ace Tangy Grape make this easy to notice, because the taste turns flat before the vapor fully stops.

6. RELX Ace Spits Back or Makes Gurgling Sounds

What happens: You hear bubbling, or tiny drops of liquid hit your tongue.

Possible causes:

• Condensation building up in the mouthpiece
• Excess e-liquid in the airflow path
• Heat exposure thinning the liquid
• Storing the device on its side for long periods

How to fix it:

1. Stop vaping for a moment.
2. Wipe the mouthpiece with a dry tissue.
3. Store it upright when you can.

Safety note: Don’t blow hard into the mouthpiece or flick the device. That only pushes e-liquid deeper into the electronics.

UAE heat makes this problem worse. Summer temperatures regularly pass 45°C, and a parked car gets far hotter. Never leave your vape on the dashboard. Icy picks like RELX Ace Fresh Mint and RELX Ace Watermelon Chill feel great in the heat, but the device itself needs to stay cool.

7. RELX Ace Digital Screen Does Not Turn On

What happens: The screen stays blank, even when you draw or plug it in.

Possible causes:

• A deeply drained battery
• Dirt or damage in the charging port
• A faulty cable or adapter
• Internal screen or circuit damage

How to fix it:

1. Shine a light into the USB-C port and check for lint or damage.
2. Try a different USB-C cable you know works.
3. Charge it for a few minutes before you judge it.

A blank screen doesn’t always mean a dead device. Often it’s a flat battery or a bad cable. If nothing changes with a known-good cable, contact your seller. Your RELX Ace Kiwi Guava Passion may just need a better cable.

8. RELX Ace Gets Too Hot While Charging

This is a safety issue. Take it seriously.

What happens: The device feels hot, not just warm, while plugged in.

Possible causes:

• A damaged or low-quality cable or adapter
• Charging in a hot place, like a car or a sunny windowsill
• A battery fault
• Internal electrical damage

What to do:

1. Unplug the charger right away.
2. Stop using the device.
3. Let it cool on a non-flammable surface.
4. Inspect your cable and adapter for damage.
5. If it overheats again, don’t charge it anymore. Replace it.

Mild warmth while charging is normal for any lithium battery. Excessive heat, swelling, a chemical smell, smoke or a bent shell are warning signs of battery failure. A good-quality phone adapter and USB-C cable work fine. Leaving a device like RELX Ace Blueberry Ice charging overnight on a hot balcony is asking for trouble.

9. RELX Ace Has Restricted or Blocked Airflow

What happens: Pulling on the device feels tight, like sucking through a thin straw.

Possible causes:

• Pocket lint or sand around the airflow openings (classic after a day at JBR beach)
• Condensation buildup
• E-liquid residue

How to fix it:

1. Check the visible airflow openings.
2. Clean the outside with a soft, dry cloth.
3. Wipe away any liquid around the mouthpiece.
4. Keep it in a clean pocket or a small pouch.

Juicy blends like RELX Ace Pineapple Passion can leave sticky residue around the mouthpiece, so a quick wipe helps.

If the blockage sits deep inside the device, leave it alone. Don’t poke it with metal objects or toothpicks. Contact your seller instead.

10. RELX Ace Automatically Fires Without Inhaling

Stop using it immediately.

What happens: The device heats up and produces vapor on its own, without you taking a puff.

Possible causes:

• E-liquid or condensation reaching the airflow sensor
• A faulty draw sensor
• An internal electronic fault

What to do:

1. Stop using the device right away.
2. Place it on a non-flammable surface, away from fabric and paper.
3. Don’t charge it or try to make it fire.
4. Don’t open it or try to repair it.
5. Contact your seller for a replacement.

Auto-firing is a fault, not a maintenance problem. A coil that keeps firing keeps heating the battery, so replace the device.

How to Prevent Common RELX Ace Problems

Here’s what works:

• Keep it out of the heat. No car dashboards, no direct sunlight.
• Store it upright when you can, and keep it away from lint and sand.
• Take short, steady puffs. Long drags flood or dry out the coil.
• Use Boost wisely. Switch to Eco for all-day vaping.
• Charge before it hits zero. Use an undamaged USB-C cable and a reliable adapter.
• Keep the port and mouthpiece clean with a dry cloth or cotton swab.
• Never open the device or poke inside it.
• Stop using it the moment it behaves strangely.

For more everyday habits, check out these simple maintenance tricks every RELX user should know. Fruit flavors like RELX Ace Mango Peach stay bright and juicy much longer when you follow these basics.

When Should You Replace Your RELX Ace or Contact Customer Support?

Stop troubleshooting and get help when you see any of these:

• A red light that keeps blinking after a full charge
• Repeated charging failures
• Excessive heat
• A swollen, bent or cracked shell
• Auto-firing
• Liquid leaking from inside the device
• A screen or electronics fault that won’t go away

The RELX Ace is sealed, so there’s nothing inside you can repair. Contact the store you bought from, and a genuine seller will guide you on a replacement. If your old device simply ran out, it’s a good excuse to try something new, like RELX Ace Triple Mango or RELX Ace Blueberry Raspberry.

Where to Buy the RELX Ace in the UAE

Fake disposables leak, burn fast and show wrong readings, so buy from a trusted local store that sells sealed, authentic stock with a security QR code you can scan.

At RELX Dubai, you’ll find the full RELX Ace range with 1- to 2-hour delivery in Dubai, Sharjah and Ajman, and free delivery on orders over AED 300. New to the Ace? RELX Ace Fresh Peach is an easy first pick.

Vape products are for adults and over in the UAE. Before you buy, read up on RELX legal status in the UAE.

Frequently Asked Questions About RELX Ace Issues

Why is my RELX Ace blinking red?

Most of the time, it’s a low battery. Charge it with a USB-C cable. If the red light keeps blinking after a full charge, it’s a device warning, so contact your seller.

Why is my RELX Ace not producing vapor?

The usual causes are a flat battery, the silicone caps still on, blocked airflow or empty e-liquid.

How do I fix a RELX Ace that is not working?

Remove the caps, charge it, clear the visible airflow openings, and take a gentle draw. If it still won’t fire, the device has a fault and needs replacing.

Why does my RELX Ace taste burnt in Boost mode?

Boost uses more power and liquid, so fast back-to-back puffs leave the wick dry. Slow down and switch to Smooth or Eco. If the burnt taste stays, the coil is finished.

Why does my RELX Ace screen show the wrong e-liquid percentage?

The display estimates liquid use based on your puffs. It doesn’t measure it directly. Heavy Boost use also drains it faster.

Why is my RELX Ace getting hot while charging?

Slight warmth is normal. Real heat is not. Unplug it, let it cool and stop using it if it happens again.

Can I clean my RELX Ace with water?

No. Never rinse or soak it. Wipe the outside, mouthpiece and port with a dry cloth or cotton swab.

What should I do if my RELX Ace keeps firing automatically?

Stop using it right away, keep it away from anything flammable, don’t charge it, and contact your seller for a replacement.

How long does a RELX Ace last?

Up to 20,000 puffs in Eco mode, whether it’s RELX Ace Dark Cherry or any other flavor. For most people, that’s around two to four weeks. Boost mode and long drags shorten that.

When should I replace my RELX Ace?

Replace it when the e-liquid runs out, the coil tastes burnt, or you see any battery or safety issue like overheating, swelling or auto-firing.

Final Thoughts

Most RELX Ace issues and fixes come down to the basics: charge it properly, keep the airflow clear, keep it cool and pace your puffs. When a problem points to the battery or electronics, don’t gamble. Replace the device. A fresh RELX Ace Banana Ice costs far less than the risk.

Plenty of smokers switch and stick with it once they learn these habits. For a real example, read this honest switch story from a former smoker. Found this helpful? Browse our blog for more RELX tips for UAE vapers.