Enable or Disable the Start/Stop System

Last updated: May 18, 2026

The Toyota Yaris XP130 (2011–2020) on petrol trims is equipped with Toyota’s Stop & Start system — a fuel-saving feature that cuts the engine when the car is stationary (clutch fully out and gear in neutral for manual, brake pressed and selector in any position for automatic) and restarts it the moment you press the clutch or release the brake. The system is on by default at every ignition cycle; you can disable it for any specific trip via the dashboard button. The Yaris is unusual in offering two deactivation paths — a deliberate switch and an automatic disable triggered by getting out of the driver’s seat.

What the Start/Stop System Does

Toyota’s Stop & Start (sometimes labelled “Toyota Stop & Start” or simply “Eco” on European Yaris trims) is a per-journey feature. Every time you start the car, the system resets to ON. The OFF button disables it only for the current trip; restart the engine and it’s active again.

When to Disable Start/Stop

• Before any work in the engine bay — an engine that restarts itself while you’re touching belts, pulleys or exhaust is a real hazard.
• Before going through an automatic car wash — the engine cutting out mid-wash can strand you between rollers.
• In heavy stop-and-go traffic where the constant restarts get annoying.
• In cold weather where the cabin heater needs continuous engine heat.

⚠️ Always deactivate the system before working on the engine. A modern starter motor can crank the engine without warning if the auto-stop conditions are met and an electrical condition resolves.

Before You Start

• Park safely with the engine running or ignition ON.
• Locate the Start/Stop OFF button. On the Yaris XP130 it’s typically on the dashboard to the left of the steering wheel (LHD) or right (RHD), marked with the standard “A” inside a circular arrow.

Tools and Supplies

None.

Option 1 — Disable Using the Dashboard Button

1. With the engine running or ignition in ON, press the Start/Stop button on the dashboard once.
2. Check the indicator light inside the button — it should illuminate amber when the system is disabled.
3. The cluster may also briefly display a “Stop & Start OFF” message.
4. The system is now disabled for the rest of this trip.

Option 2 — Automatic Deactivation by Unbuckling

1. Unbuckle the driver’s seat belt.
2. Open the driver’s door.
3. The Start/Stop system will be temporarily disabled automatically — the engine will keep running instead of auto-stopping.

This auto-disable is a safety feature, not a feature for daily use. It’s how the car prevents an auto-stop while you’re getting out (e.g. to check the bonnet at a service stop). To re-enable, re-buckle the seatbelt with the door closed; the system reverts to active for any further stops.

Re-enable the System

• Press the dashboard button again — the indicator light turns off and the system is re-enabled for the rest of the trip.
• Or simply restart the engine — Stop & Start always defaults to ON at every ignition cycle.

When the System Won’t Engage

Even with Stop & Start enabled, the Yaris will only auto-stop the engine if all these conditions are satisfied. If any one fails, the engine keeps idling — that’s by design:

• Driver’s seat belt fastened.
• Driver’s door fully closed.
• Bonnet fully latched.
• 12V battery voltage and state-of-charge within target range.
• Engine and coolant at normal operating temperature.
• Outside temperature within normal range — extreme cold or heat inhibits.
• Cabin temperature close to climate-control setpoint (not in full-blast warm-up or cool-down).
• Recent engine-off period less than 3 minutes (longer triggers an auto-restart).
• Steering wheel close to centre (system holds off during parking manoeuvres).

Troubleshooting

• System never auto-stops. The most common cause on a 2011–2020 Yaris is a tired 12V battery. Even one that still starts the car reliably can be too weak for Stop & Start, which is the first feature suppressed when battery state of charge drops. Have it load-tested.
• Engine auto-stops but won’t auto-restart. Press the START button or turn the key fully on its own. If this happens repeatedly, the heavy-duty starter motor used for Stop & Start may be at the end of its life — rated for 300,000+ restarts but eventually wears out.
• Auto-stop suddenly stopped working after a battery change. The engine ECU needs to learn the new battery’s characteristics over a few drive cycles. Drive normally for a week; auto-stop will return once the system trusts the new battery.
• System keeps auto-disabling on its own. One of the conditions above is intermittently failing. Common culprits: a bonnet that doesn’t fully latch (lift and re-close it firmly), a seat-belt buckle that doesn’t always register fastened, or a door switch that’s failing.
• Want to disable permanently. The Yaris XP130 has no factory menu setting for permanent disable. Aftermarket “memory” modules plug into the OFF button’s wiring (or sometimes the OBD-II port) and hold the OFF state across ignition cycles. They’re widely available, fully reversible, and shouldn’t affect emissions inspection.

Frequently Asked Questions

Does the Yaris hybrid (HSD) have the same Stop & Start button?

No. The Yaris XP130 hybrid uses a completely different powertrain (the engine cycles on and off based on the hybrid logic, not driver brake input). There’s no “Stop & Start” feature to disable on the hybrid — the engine-cycling behaviour is part of the hybrid system itself, not a separate feature you can switch off.

Will deactivating Stop & Start cost me fuel?

Marginally. Toyota’s official figures suggest 3–4% urban fuel saving with Stop & Start active. Disabled for the whole journey, the difference is about €1–2 per tank of city driving. For highway driving, the system rarely engages anyway, so the difference is negligible.

Why does the Yaris auto-disable when I open the door?

Toyota added this as a courtesy / safety feature. If you’ve parked but left the engine running (e.g. to keep the climate control going for a passenger while you nip into a shop), Stop & Start won’t kick in and shut the engine off when you sit back down. It’s the kind of small UX touch that’s common in Toyota cabin engineering.

Does Stop & Start wear out the starter motor faster?

The Stop & Start-equipped starter on the Yaris XP130 is uprated specifically for the extra cycles — typically rated for 300,000+ restarts vs ~30,000 for a conventional starter. The dual-mass flywheel is similarly uprated. In normal use the system doesn’t shorten starter life appreciably.