2022-2025 Lucid Air Coolant Pipe: Leaks, Warnings, and Replacement Guide

Symptoms of a Failing Coolant Pipe

A failure in the Lucid Air's cooling system is a serious issue that can lead to reduced performance or damage to the high-voltage battery. Be aware of the following signs that indicate a coolant pipe may be leaking or failing.

Visible Fluid Leaks

The most obvious sign of a leak is a puddle of fluid under your vehicle after it has been parked. Unlike normal, clear water condensation from the air conditioning system, the Air's coolant is colored. Forum reports from owners indicate that coolant for the drive unit may be pink or red. Other discussions suggest battery coolant may be blue or brown. Any colored fluid found under the car warrants an immediate service appointment. Leaks often occur at connection points or from cracks in the pipe itself.

On-Screen Warning Messages

Your Lucid Air's dashboard will alert you to cooling system problems. A recall related to the High-Voltage Coolant Heater (HVCH) can trigger a specific “Defrost Unavailable” message on the cockpit panel. While this points to a specific component, it is part of the overall coolant circuit. Other, more general warnings about the thermal system or high-voltage battery temperature could also indicate a loss of coolant pressure or flow due to a leak.

Sweet Smell From Engine Bay

Coolant fluid often has a distinct, sweet smell. If you notice this odor around your car, especially from the front or rear where the drive units are located, it could be coolant leaking onto hot components and evaporating. This may be noticeable even if the leak is too small to form a puddle on the ground.

Loss of Cabin Heat or Defrost

The High-Voltage Coolant Heater (HVCH) uses the coolant system to provide cabin heat and defrost the windshield. If this heater fails or if there is a significant coolant leak, you will lose the ability to heat the cabin or clear the windshield. This is a known issue addressed by a recall.

Known Issues, Recalls, and Service Bulletins

As a relatively new vehicle, widespread component failure data is limited. However, one significant recall directly involves the coolant system.

Recall 24V-495: High-Voltage Coolant Heater (HVCH) Failure

Lucid issued a recall for 7,506 Air vehicles from the 2022-2024 model years because the HVCH may fail internally. This failure prevents the system from defrosting the windshield, which increases the risk of a crash in certain conditions.

• NHTSA Campaign Number: 24V-495 (also referenced by Lucid's number SR-24-04-0)
• Symptom: Loss of windshield defrosting and cabin heat. An OTA software update enables a "Defrost Unavailable" warning on the dash if a failure is detected.
• Remedy: Lucid Service Centers will replace the faulty HVCH component free of charge. An initial Over-the-Air (OTA) software update was sent to help identify the failure.

Forum-Reported Drive Unit Leak

At least one owner on a Lucid forum reported a pink fluid leak that was traced back to the rear motor unit. The service center could not identify the exact source of the leak within the unit and opted to replace the entire rear motor assembly. This indicates that hoses and connections directly on the drive units are potential failure points.

Buying a Used Lucid Air Coolant Pipe

Given the high cost and limited availability of new parts directly from Lucid, a used OEM coolant pipe can be a smart, cost-effective solution. Because no aftermarket options exist, a recycled OEM part is your only alternative to a new one. Here’s what to inspect before buying.

1. Verify the Part Number

The most critical step is to match the part number exactly. The known OEM part number for at least one of the main coolant hoses is P11-M50108. Different pipes within the system will have unique numbers. Always confirm the part number from your failed pipe before ordering a replacement.

2. Inspect for Cracks and Brittleness

Carefully examine the entire length of the pipe, especially at any bends or connection points. Look for hairline cracks, signs of dry rot, or any areas where the material feels hard and brittle instead of pliable. The high temperatures of the cooling system can degrade plastic and rubber over time.

3. Check for Swelling or Bulging

Inspect the pipe for any sections that appear swollen or bloated. This can be a sign that the internal structure of the hose has been compromised by oil contamination or excessive pressure, indicating it is close to bursting.

4. Examine All Fittings and Connectors

Modern coolant pipes often use quick-connect style fittings. Ensure these plastic connectors are not cracked or damaged. Check that any locking clips are present and intact. A damaged connector will not create a proper seal, leading to immediate leaks upon installation.

5. Ask About the Donor Vehicle

If possible, get the mileage from the vehicle the part was removed from. A part from a lower-mileage vehicle is always preferable. For a vehicle as new as the Lucid Air, most used parts will have relatively low mileage, but it is still a good practice to ask.

Replacement Overview & Difficulty

• Difficulty Rating: 5 out of 5 (Professional Technician Recommended)
• DIY Feasible: No

Replacing a coolant pipe on a Lucid Air is a complex job. The procedure involves:

1. Safely disabling the vehicle's 900V+ high-voltage electrical system.
2. Removing various underbody panels and components to access the specific pipe.
3. Draining the specialized coolant into a clean container.
4. Carefully disconnecting the old pipe and installing the new one.
5. Refilling the system with the correct type and amount of Lucid-specified coolant.
6. Performing a vacuum-fill or other specialized bleeding procedure to remove all air from the complex cooling loops. Air pockets can cause overheating and damage the battery or drive units.

Due to these complexities and safety risks, this is not a DIY-friendly repair.

Cost of Replacement

Costs can vary significantly based on which pipe has failed and your location. Since Lucid does not sell repair parts directly to the public, new parts must be sourced through a Lucid Service Center as part of a repair order.

Cost estimates are for reference only and do not include the price of new coolant or diagnostic fees. Labor costs for EV specialists are typically higher than standard shops.

Frequently Asked Questions (FAQ)