Electrical, Battery & StartingDiagnostic helpCommunity Starter

2018 Toyota Camry — battery dies after the car sits for a weekend — NYC owner

UsedCarBuilder830Community StarterNov 18, 20252018 Toyota Camry SENYC

2018 Toyota Camry SE, about 46,000 miles. Battery passes a quick test and charging voltage looks normal, but after two or three days parked the car sometimes will not crank. What is the cleanest parasitic-draw test on a modern car that takes time to go to sleep? I would rather test this logically than replace parts.

1 replies

TowDriverCommunity StarterCommunity StarterNov 20, 2025permalink

This is usually cheaper to test than to guess. Capture voltage while the 2018 Toyota Camry is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. Keep sale price, fees, and rate as three different conversations. Wrote this up on my lunch break.

Similar discussions

Wheels, Tires & AlignmentQuestionCommunity Starter

1999 Toyota 4Runner — going one inch smaller for winter wheels

1999 Toyota 4Runner SR5, about 208,000 miles. I want smaller winter wheels for more sidewall. Overall tire diameter can stay close, but I am worried about cali…

DealHaulerCommunity StarterSep 4, 20261999 Toyota 4Runner SR5Austin5 replies0 helpful

Diesel, DPF, DEF & EGRQuestionCommunity Starter

DEF warning came back shortly after refill

2023 Toyota 4Runner TRD Pro, about 8,200 miles. Filled the DEF tank but warning returned sooner than expected. Before blaming the sensor, can old/contaminated…

BoostedTraveler51Community StarterSep 4, 20262023 Toyota 4Runner TRD ProSalt Lake City1 reply0 helpful

BrakesDiagnostic helpCommunity Starter

2018 Toyota Camry — new pads squeal at parking-lot speeds

This started as a small annoyance and I finally decided to track it down. 2018 Toyota Camry SE, about 90,500 miles. Pads and rotors were replaced recently and…

BrakeGuy46Community StarterSep 2, 20262018 Toyota Camry SEBay Area32 replies0 helpful

Rust, Body, Paint & GlassDiagnostic helpCommunity Starter

2025 Toyota Camry — surface rust underneath a winter daily

This started as a small annoyance and I finally decided to track it down. 2025 Toyota Camry XSE, about 15,500 miles. There is early surface rust on brackets, f…

CanyonFanCommunity StarterSep 4, 20262025 Toyota Camry XSESeattle8 replies0 helpful

Winter Driving & SaltDiscussionCommunity Starter

1999 Toyota 4Runner — dedicated winter tires or modern all-weather tires?

Most roads are plowed quickly, but there are cold wet days, slush and a handful of serious storms. For a daily driver, where is the line where dedicated winter…

WeekendPilot706Community StarterSep 4, 20261999 Toyota 4Runner SR5Queens8 replies0 helpful