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Automotivebypass
2016-2018 Honda Pilot Auto Start Stop Eliminator
Product function
Fits: The 2016–2018 Honda Pilot. All rows in the fitment table are marked 100% fitment match. In these years the Pilot is a three-row midsize SUV. No trim split is given, so check for the factory Auto Idle Stop button and compare the connector photo.
Why the default is always on: Manufacturers make stop-start non-latching for a reason tied to EPA ratings. If drivers could leave it off, the EPA would average on and off results, giving a lower rating.
What it does: Out of the factory, Auto Idle Stop switches back on at every start. This inline memory harness stores the last setting you chose and applies it at the next start.
Check these points: Confirm the model year and that the vehicle was built with Auto Idle Stop. Make sure the connector matches the pictures.
What it leaves alone: The original switch still does its job. It does not alter the engine tune, shift programming or charging. The Honda Pilot can still refuse an automatic stop when conditions are not right.
Fitting: It plugs in line with the factory connector named in the instructions. Both ends are factory-style plugs, so nothing is cut or spliced. No software is changed.
Order details: Free shipping to the contiguous US, dispatched in 1–2 business days with about 3–4 days in transit. Returns within 45 days with pre-approval (20% restocking fee, buyer pays return postage). Covered by a 3-year limited warranty. Send the VIN to support@automotivebypass.com if any row is unclear. Support answers weekdays, 9–5 Pacific.
Select your vehicle in the fitment guide to confirm this product is right for your year, make and model.
Description
If your Honda Pilot turns Auto Idle Stop back on every time you start it, this inline memory harness solves that one problem: it remembers the last setting and restores it at the next ignition cycle. Coverage is the 2016–2018 Honda Pilot. It plugs in line with the factory connector named in the instructions. Both ends are factory-style plugs, so nothing is cut or spliced.
You can still use the original button at any time. Whatever you select last is what the module repeats on the next start. Take the module out and the vehicle behaves exactly as it did from the factory.
Vehicles and years covered
Every row below is listed as a 100% fitment match for this part:
- Honda Pilot: 2016–2018
The listing is written around the third-generation (2016-2022) Pilot. The table does not separate trims; what matters is that the vehicle has factory stop-start and the connector shown in the photos.
How factory stop-start works on the Honda Pilot
Auto Idle Stop is designed to default to on. The off switch (usually marked with an "A" inside a circular arrow) cancels it for the current drive. At the next start the system is armed again. That reset is intentional on the manufacturer's side, and it is the only behavior this module changes.
Conditions the factory system checks
Even with Auto Idle Stop enabled, the engine control logic only stops the engine when conditions allow it. Typical blockers are a low battery state of charge, an engine that has not reached operating temperature, heavy heating or A/C demand, steering input, an open door or unlatched seatbelt, and some drive modes. If the system never seems to stop the engine, one of these is usually the reason, and the module does not change that logic.
Scope of the module
- Leaves no permanent change after removal.
- Lets you re-enable the system with the factory button at any time.
- Leaves engine and transmission software untouched.
- Holds the stop-start button state between drives.
Battery notes for stop-start vehicles
The module draws its power from the vehicle and does not change charging behavior. If your Honda Pilot sits for long periods, the same rules apply as without it: a maintainer helps, and a battery that tests weak should be replaced with the type specified for stop-start vehicles (usually AGM or EFB).
Diagnostics first
If the setting is not remembered, check that the module was installed with the ignition off and that the connector clicked into place. Then press the factory button once, switch the vehicle off, close the doors, give the electronics time to shut down, and start again. If it still resets, contact support with the year, trim and a photo of the connector.
Day-to-day use
Pressing the same button on every drive is what wears on owners. People who tow, plow, idle in pickup lines, creep through heavy traffic or simply want the engine running at a light end up making the same press dozens of times a week. On the Honda Pilot, the module turns that into a one-time choice you can still change whenever you want.
Connecting it
It plugs in line with the factory connector named in the instructions. Both ends are factory-style plugs, so nothing is cut or spliced. Work with the ignition off. Seat each connector until its lock engages, then secure the module with the supplied ties or tape so it cannot rattle or touch pedals, steering parts or anything hot. Start the vehicle, press the stop-start button once, then restart to confirm the choice is held.
Fitment check
- Model year and model match a row in the table above (2016–2018 Honda Pilot).
- Your Honda Pilot has the factory stop-start button. Base trims or engines without stop-start have nothing for the module to remember.
- No aftermarket remote start, alarm or gateway bypass is wired into the same circuit. If one is, email support before ordering.
- The battery and charging system test good and no warning lights are on.
- The connector at your install point matches the one in the product photos.
- If you are unsure, send your VIN to support@automotivebypass.com and we will confirm fitment.
Shipping and support
Shipping is free to the contiguous US. Orders leave in 1–2 business days and usually arrive 3–4 business days later. Returns are accepted within 45 days with pre-approval; a 20% restocking fee applies and the buyer covers return shipping. The part carries a 3-year limited warranty, and support@automotivebypass.com answers Monday to Friday, 9–5 Pacific.
Questions & Answers
Will it fix a "stop-start unavailable" message?
No. That message usually points to the battery or a sensor. Diagnose and repair that first.
Does it change engine power or fuel trims?
No. It does not reprogram the engine or transmission computers. It only stores the stop-start button state.
Which Honda Pilot years does this fit?
The listed range is 2016–2018. Check the fitment table on this page against your exact model year.
Will Auto Idle Stop come back on when I restart my Honda Pilot?
Not if you turned it off before shutting down. The module repeats your last selection at the next start. If you leave it on, it stays on.
Why does my Honda Pilot sometimes not auto-stop even when the system is on?
The factory logic checks battery charge, engine temperature, climate load and other inputs. If any are outside range it keeps the engine running. The module does not affect those checks.
Does it change how the battery is charged?
No. Charging is still managed by the vehicle. Stop-start vehicles normally use an AGM or EFB battery built for frequent restarts; replace it with the same type when it wears out.
What happens if I unplug it?
The vehicle returns to the factory default, with Auto Idle Stop switched on at every start.
Can I remove it later?
Yes. Unplug the module and reconnect the factory connector; the vehicle returns to its stock default.
Is this the same part for every Honda?
No. Connectors and the module that holds the stop-start state differ by platform, so this SKU is matched to the fitment rows on this page. Send the VIN to support if you are unsure.
How does it connect?
It plugs in line with the factory connector named in the instructions. Both ends are factory-style plugs, so nothing is cut or spliced.
Does my Honda Pilot need the factory stop-start button for this to work?
Yes. The module works with the factory stop-start system and its button. A vehicle built without stop-start has no setting for it to remember.
Does the stop-start button still work after installation on the Honda Pilot?
Yes. The factory button works normally. The module simply stores whatever you chose last.
Why does Auto Idle Stop turn itself back on every time?
Automakers set stop-start to default to on at each start. Under EPA test rules, a system that stays off after shutdown is tested both on and off and the results are averaged, which lowers the rated fuel economy, so most systems reset at every key cycle. The module carries your last choice across that reset.
Vehicle Fitment
Additional Information
- Brand
- Automotivebypass
- Fits vehicle make
- Honda
- Product type
- Auto Start Stop Eliminator
- SKU
- RC-ASSE-04-01
- Brand
- Honda
- Installation
- Confirm the connector location and installation steps for your exact vehicle before ordering.
- Package
- Review the product description and included contents before ordering.
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