Why is my 2019+ Lexus ES 350 leaking coolant?

Short answer: Some 2019+ ES 350 water pumps leak early. Dry pink crust alone can be normal. Wet coolant or a dropping level means the pump needs replacing, ideally under warranty.

Symptom: The coolant level dropping, wet pink coolant at the water pump, drips under the car, or a sweet smell.

What to check first

1. Check the coolant level cold and watch it for a week or two.
2. Look at the water pump for wet coolant or drips (not just dry pink crust).
3. Ask the dealer to inspect it using Lexus's water pump leak bulletin.
4. Check whether you're still under the 6-year/70,000-mile powertrain warranty.

Likely causes

1. Water pump seal leak. Some ES 350 water pumps start leaking at relatively low miles. Lexus issued a bulletin on telling a leak apart from normal residue.
2. Normal dry residue at the weep hole. A small amount of dry pink residue can be normal. Wet coolant or drips is a real leak.
3. Hose or radiator leak. Rule out other cooling parts with a pressure test.

What it usually costs

Under the powertrain warranty, the pump is covered. Out of warranty, a V6 water pump job is a mid-size repair.

Is it safe to keep driving?

A slow leak with a normal temperature gauge is okay for short trips. If the gauge climbs, stop and tow it.

DIY or shop?

Topping up is DIY. The pump replacement is usually a dealer or shop job.

Recalls, bulletins and complaints in plain words

• Related recalls: NHTSA lists these recalls touching this area of the Lexus ES 350: 19V288000 (2019-2019 model years, air bags:knee bolster); 20V012000 (2019-2019 model years, fuel system, gasoline:delivery:fuel pump); 20V682000 (2019-2020 model years, fuel system, gasoline:delivery:fuel pump); 23V865000 (2020-2021 model years, air bags:sensor:occupant classification). Check your VIN at nhtsa.gov/recalls. If your car is part of this recall, the dealer fixes it for free.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 2 keyword-matched complaints for Lexus ES 2019–2024 (of 122 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-07; keywords: coolant, water pump, leak, overheat) (NHTSA returned no data for 1 model-year queries). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In 2019 ES water pump leaks on ClubLexus, owners of 2019 ES models discussed water pumps leaking, some at low miles.
• In 2020 ES 350 41k miles coolant dropping on Reddit r/Lexus, a 2020 ES 350 owner at about 41,000 miles said the coolant level kept dropping and asked what to check.

Quick tip

Lexus is usually good about this under warranty. Bring photos of the wet spot, not just the crust.

Vehicle focus: Lexus ES 350 seventh generation (2019–2024) with the 3.5L V6. The ES 300h hybrid uses a different engine.

Safety / mechanic note

Overheating can damage the engine. Verify with a mechanic.