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Understanding Coolant Maintenance for 2022 Model Y Performance

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Laura J. · rep 0 · May 22, 5:26 AM · 1 replies · solved · Question

Vehicle: 2022 Tesla Model Y Performance

Hey everyone,

I recently got my hands on a 2022 Tesla Model Y Performance, and I'm trying to get a handle on all the maintenance aspects. Coming from ICE vehicles, the coolant system in an EV is a bit of a mystery to me. I know it's crucial for battery and motor thermal management.

How often should I be checking the coolant levels for the various loops (battery, motor, HVAC)? Is there a specific type of coolant Tesla uses, or can I just use any standard EV coolant? Can I top it off myself if it's low, or is this strictly a service center job due to the complexity of the system? Any insights would be super helpful!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:26 AM

0

ClearTheCode admin answer:

Congratulations on your 2022 Tesla Model Y Performance! Understanding the thermal management system is key for EV longevity. Tesla vehicles utilize a sophisticated liquid cooling system for the battery, drive units, and power electronics, as well as for the cabin HVAC.

Causes for Coolant Maintenance:

  • Coolant degrades over time, losing its heat transfer and corrosion protection properties.
  • Evaporation or minor leaks can lead to low coolant levels.
  • Regular maintenance ensures optimal battery and motor performance and lifespan.

Coolant System Overview & DIY Checks:

  1. Multiple Loops: Your Model Y has at least two main coolant loops: one for the battery and drive units (often referred to as the 'powertrain coolant') and another for the cabin heating/cooling (HVAC).
  2. Coolant Type: Tesla specifies a particular type of coolant, typically a long-life, ethylene glycol-based coolant with specific corrosion inhibitors (e.g., G-48 or similar specifications). It is crucial to use the exact type specified by Tesla. Mixing different coolants can lead to system damage. Check your owner's manual for the precise specification.
  3. Checking Levels:
    • Locate the coolant reservoirs in the 'frunk' (front trunk) area. There are usually two or more, clearly marked.
    • Ensure the vehicle is on a level surface and the system is cool (not recently driven).
    • Visually inspect the fluid levels against the 'MIN' and 'MAX' marks on the reservoirs.
  4. Topping Off:
    • If a reservoir is slightly below the 'MIN' line, you can carefully top it off with the correct Tesla-specified coolant. Do not overfill.
    • Use a clean funnel to prevent contamination.
    • Do not use water or generic coolant.
    • A slight drop over several years is normal due to evaporation, but significant or rapid drops could indicate a leak.

When to See a Shop:

  • If you notice a significant or rapid drop in coolant level, as this could indicate a leak in the system.
  • If you see any coolant puddles under your vehicle.
  • If you receive any dashboard warnings related to the thermal management system or coolant levels.
  • If you are unsure about the correct coolant type or the topping-off procedure.
  • A full coolant flush and refill is a complex procedure that typically requires specialized equipment to properly bleed air from the system and should generally be performed by a Tesla Service Center.
  • No specific OBD codes are typically associated with routine coolant level checks, but low levels or system faults would trigger specific diagnostic trouble codes (DTCs) that a service center can read.
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