2021 Lexus ES 350 — battery keeps dying after two or three days parked

Ask what changed right before it started. If a shop can't duplicate it on the 2021 Lexus ES, bring a video plus freeze-frame data, not just a story. Don't erase codes until someone who can help has seen them. Parts cannon is a personality type I try to avoid. Make the next action something you can finish this week. Happens in gear, not in park, for what that's worth.

I'd want a measurement, not a hunch. A pressure test beats staring at a dry driveway if the 2021 Lexus ES is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. This is from a 2021 Lexus ES in Seattle. Learned this the expensive way on a previous car. That's my plan before I call anyone.

This is usually cheaper to test than to guess. Move a coil or plug on the 2021 Lexus ES if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. Learned this the expensive way on a previous car. That's coming from doing this as an owner, not a shop. I'll update if anything new shows up.

Log the conditions before you spend. A pressure test beats staring at a dry driveway if the 2021 Lexus ES is losing coolant with no puddle. You'll know quickly if you're on the wrong tree. On “battery keeps dying after two or three,” that was the fork that mattered for me. This is from a 2021 Lexus ES in Seattle. Do that first. Climate here is different, so treat that as a local data point. If this is nothing, great. I want that in data.

Start with the test that can prove you wrong. Swap the cheap/easy piece first on the 2021 Lexus ES and see if the fault moves. You'll know quickly if you're on the wrong tree. This is from a 2021 Lexus ES in Seattle. I'd want that in writing, not as a promise. I already checked the easy fluid levels.

If it were in my driveway, loaded-suspension checks on the 2021 Lexus ES catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. Not gospel, but it saved me a headache. I'd rather be boring and correct. I refuse to clear codes until someone else sees them.