Tesla Model Y Charging Schedule: Why It Starts Early—or Does Not Charge Overnight

A Model Y that starts charging as soon as you plug in has not necessarily ignored its timer. A missing end time, a late plug-in or an overlapping schedule can change what happens. And if the car waits all night, the charger may have a second timer that never agrees with the vehicle.

This guide explains the current Model Y Controls → Schedule system documented in the Tesla DIY guide linked by Tesla Support Canada, checked October 31, 2026. Use the instructions matching your installed software. It covers scheduled home/AC charging, not a battery-percentage recommendation or electrical installation.

Set the location, days and charging times

1. Park before changing settings. Open Controls → Schedule.
2. Choose the location. Current Location uses where the car is parked; that schedule applies when you return to the same approximate location. Home and Work can be selected only if those locations are already saved.
3. Select Charge, then configure the start and stop times and how often it should run. Check Repeat Weekly if you want a recurring routine; without it, the schedule runs once and then disables itself.
4. Select Create. Plug in using the vehicle and charging-equipment instructions, then check that the intended schedule is enabled for this location.

The timer controls when charging occurs. The charge limit still controls how full the battery becomes. Use the recommendation for your actual battery and vehicle; do not assume this guide requires 80%, 90% or 100%.

Start at and End by are not interchangeable

Start at only: charging begins at that time and continues until the charge limit is reached. Without an End by time, this is not a firm overnight stop-time instruction.

End by only: Model Y calculates when it needs to begin to meet the limit. It may briefly draw power when you plug in to estimate the necessary charging time; a brief initial draw is not, by itself, a failed schedule.

For example, Tesla describes a vehicle needing 2 hours of charging to finish by 2 a.m. When plugged in at 9 p.m., it briefly assesses the charge and schedules a midnight start. That is an illustration, not a guaranteed duration for your battery or charger.

Check other enabled schedules too. Tesla’s schedule handling can combine separate entries into a larger charging block. Its example joins 2–2:30 a.m. and 3–5 a.m. into a 2–5 a.m. block. Do not assume the apparent half-hour gap will remain a charging pause.

Why it may start charging immediately

Tesla lists these situations in which plugging in can trigger immediate charging:

• You plug in during a scheduled charging period.
• You plug in up to 6 hours after the scheduled start, and no End by time is set.
• The next scheduled charge is more than 18 hours away and is not on the current day.
• You set an End by time without a Start at time, and there is not enough time left to reach the charge limit.

The reverse also matters: Tesla says the car does not automatically start if you plug in within 6 hours after a scheduled End by time, unless another charging schedule applies. A late arrival can therefore behave differently depending on which time fields you filled in.

Do not use the vehicle schedule as a promise that every kilowatt-hour will fall in the cheapest tariff period. Review the actual times, charging requirement and session history. Our Ontario charging-rate guide explains why the whole household bill matters, not just one overnight rate.

Check the charger’s timer as well as the car’s

A Tesla Wall Connector can have its own schedule. Tesla Canada explicitly advises checking that the Wall Connector and vehicle both allow charging during the same periods. Its actual app screenshot labels this separate setting Scheduled Charging, with Allow Charging at and Stop Charging by times.

As a simple hypothetical example, if the car allows charging from 11 p.m. to 7 a.m. but the charger permits only midnight to 6 a.m., their shared window is midnight to 6 a.m.—6 hours, not 8. If the windows do not overlap, changing the battery percentage will not make the timers agree.

Review both schedules before changing more settings. Tesla says the Wall Connector app’s Start Charging control can override the Wall Connector schedule; do not assume that it also overrides every vehicle-side condition. For other chargers, use their own instructions. Do not change breaker, wiring or installer current limits to troubleshoot a timer.

Departure preparation is a separate setting

In Schedule, Precondition sets when you want Model Y ready to drive. The car calculates when to begin preparing the cabin and battery. It is not the same as choosing a charging start time, and scheduling charging alone does not necessarily prepare the cabin.

Tesla says preconditioning can run while unplugged unless the vehicle is in Low Power Mode. That does not mean it is drawing electricity from the wall. Keep the departure time and the charging window consistent with the trip you actually need.

Fast charging is different: Tesla says scheduled charging is ignored at fast chargers, including Superchargers. Do not wait for a home timer to govern a public fast-charging session.

If the overnight result is still wrong

Check the selected location, day, Repeat Weekly setting, start/end fields, other enabled schedules, charge limit and charger-side restrictions. Record when you plugged in, what the vehicle and charger displayed, and when charging actually began or stopped. Change one relevant setting at a time so you can tell what helped.

A charging fault or unavailable power is not automatically a scheduling problem. Follow the displayed warning and the charger’s support instructions; seek qualified assistance rather than opening charging equipment. Before relying on the routine for an early departure, confirm that a real session behaves as intended and leaves enough charge for the trip.