How to Start a Car: Key, Push-Button, Manual & No-Start Fixes

To start a car, make sure the transmission is in Park (or Neutral), press the brake pedal (the clutch pedal on a manual), then turn the key or press the start button and let go as soon as the engine fires. The exact steps depend on how your car starts, so this guide quotes the owner’s manuals we read from Honda, Kia and Ford, covers carbon monoxide and remote-start limits, and ends with a triage table for a car that will not start.

How to Start a Car in Five Steps

1. Get set. Sit down with the key or smart fob inside the car and set the parking brake. Honda’s 2021 CR-V guide and Kia’s electric vehicle guide both list the parking brake as the first check.
2. Select Park. On an automatic, shift to P. Honda’s CR-V guide says starting in N is possible but that it is safer to start in P. On a manual, use Neutral with the clutch down (see the manual section below).
3. Press the pedal firmly. Honda says to keep your foot firmly on the brake pedal when starting the engine. On a manual transmission the clutch pedal takes that job.
4. Start without touching the gas. Turn the key to START or press the button once. Honda’s guide says to press the button without pressing the accelerator, and a Kia manual says not to start the vehicle with the accelerator pedal depressed.
5. Release as soon as it runs. A key switch springs back to ON when you let go. With a button, Honda says not to hold it, and Kia says not to press it for more than 10 seconds except with a blown stop lamp fuse.

If the engine does not start, Honda’s guide says to wait at least 30 seconds before trying again. The triage table near the end covers what to check.

Start Procedures by Car Type, From the Owner’s Manuals

This table is the part most guides skip: each start type with the steps and warnings as the maker states them, with the model and year we read. Your own manual always wins over any general guide.

Start type	Steps as the manual states them	Warning to know	Manual we read
Key ignition	Switch positions run LOCK, ACCESSORY, ON, then START. Turn to START to crank the engine; the switch returns to ON when released.	Normal driving position is ON, not START.	Honda 2021 CR-V guide (models without smart entry)
Push-button, automatic	Smart remote in the car. Parking brake on, shift lever in P, brake pedal pressed, then press ENGINE START/STOP without pressing the accelerator.	Do not hold the button. If it does not start, wait at least 30 seconds.	Honda 2021 CR-V guide
Manual transmission	Fully press the clutch pedal, then press the push button ignition switch. On Honda’s 2024 Civic page, manual models use the clutch where automatics use the brake.	If you release the clutch during starting, the engine stops cranking (Ford).	Ford Tourneo Connect and Transit Connect supplemental guide; Honda 2024 Civic Sedan page
Hybrid or electric	Smart key inside, seat belt on, parking brake on, brake pedal held, vehicle in P, then press the EV button. Drive when the READY indicator is ON.	READY indicator OFF means you cannot drive; start again.	Kia electric vehicle guide, 2023 online edition
Remote start	Only works with the shift lever in P, brake not pressed, hood closed, all doors closed and locked, and the key removed from the ignition.	Carbon monoxide: never use in a garage or poorly ventilated area. Engine stops after 10 or 20 minutes.	Honda Remote Engine Start System manual, 2012

Key Ignition: What Each Position Does

A key switch has four positions in Honda’s 2021 CR-V guide for models without smart entry: LOCK, ACCESSORY, ON and START. ACCESSORY runs the audio system and the accessory socket with the engine off. ON powers all electrical components and is the normal position while driving. START is the one you use to crank, and the switch returns to ON when you release the key.

Push-Button Start: Why the Brake Pedal Comes First

On a push-button car, the same button does two jobs. With your foot off the pedal it steps through power modes; with your foot on the pedal it starts the engine. Honda’s 2024 Civic page puts it plainly: without the pedal pressed, the mode changes to ACCESSORY. In Honda’s CR-V guide the button is off in LOCK, blinks in ACCESSORY and is steady once the engine runs.

The car also has to find the fob. A Kia manual says the engine starts only when the smart key is in the vehicle, and a Honda guide says the engine can start with the remote just outside a door or window, so keep the fob inside the cabin.

If the fob battery is weak

Two makers describe a backup. On the 2024 Honda Civic Sedan, a beeper sounds, the display says to touch the start button with the emblem side of the remote, and the button flashes for about 30 seconds. Hold the remote’s H-logo side against the button while it flashes. Then press and hold the brake (CVT) or clutch (manual), and press ENGINE START/STOP within 10 seconds after the beeper sounds. A Kia manual says to press the button with the smart key at a right angle to it. Our guide to replacing a car key battery shows the cell sizes and steps.

How to Start a Manual Transmission Car

A manual adds one pedal and one rule: the clutch has to be pressed. Ford’s supplemental guide for the Tourneo Connect and Transit Connect says to fully press the clutch pedal and then press the push button ignition switch. Honda’s 2024 Civic page treats manual models the same way, with the clutch pedal where an automatic uses the brake.

1. Set the parking brake and sit with the clutch pedal on the left, brake in the middle and accelerator on the right.
2. Press the clutch fully to the floor and keep it there. Ford’s guide says that if you release the clutch while starting, the engine stops cranking.
3. Check that the shifter is in Neutral before you crank.
4. Turn the key or press the button without touching the accelerator, then release as soon as the engine runs.
5. Keep the clutch pressed until you are ready to select first gear.

A manual with a dead battery has one extra option that automatics do not: a push or roll start. We cover that technique, and why it is wrong for automatics, hybrids and EVs, in our separate push-start guide.

Hybrid and Electric Cars: Wait for READY

Hybrids and EVs often start silently, so the dash tells you what happened. In Kia’s electric vehicle guide, you sit in the driver’s seat with the smart key in the vehicle, fasten the seat belt, engage the parking brake, hold the brake pedal, confirm the vehicle is in P, and press the EV button while holding the brake. When the READY indicator is ON you can drive; when it is OFF you cannot, and the guide says to start the vehicle again.

Safety Rules Before You Turn the Key

• Carbon monoxide. CDC says never to run your car or truck inside a garage attached to a house, even with the garage door open, and to open the door of a detached garage to let in fresh air when you run a vehicle inside.
• Keyless cars. NHTSA’s keyless ignition page lists drivers who leave the engine running after parking as a carbon monoxide risk in a closed space, and drivers who shut the engine off without selecting Park as a roll-away risk.
• Exhaust smell in the cabin. Honda’s CR-V guide says to have the vehicle checked by a dealer if the exhaust sounds abnormal or you smell exhaust gas inside.
• Children and the button. A Kia manual says never to let children or people unfamiliar with the vehicle touch the ENGINE START/STOP button.
• Shutting off while moving. Ford’s guide warns that switching off the engine while the vehicle is still moving significantly decreases braking assistance.

Remote Start: Conditions and the Garage Rule

Remote start is convenient, but it is the easiest way to run an engine somewhere it should not run. Honda’s 2012 Remote Engine Start System manual says the system only operates when the shift lever is in P, the brake pedal is not pressed, the hood is securely closed, all doors are closed and locked, the key is out of the ignition and battery power is not low.

The same manual lists automatic shutoff triggers: 10 or 20 minutes passing, the driver door being unlocked, a door or the hood opening, the brake pedal being pressed, or the shift lever leaving P. It also warns that carbon monoxide can build up quickly in closed or even partly enclosed areas and says never to use the remote starter with the vehicle parked in a garage or other poorly ventilated area.

Cold-Weather Starting: What the Manuals Say

The online advice on cold starts is full of exact temperatures and warm-up minutes. The manuals we read give none. Honda’s 2021 CR-V guide says the engine is harder to start in cold weather and in thinner air above 8,000 feet (2,400 meters), that you should turn off electrical accessories such as lights, climate control and the rear defogger to reduce battery drain, and that an engine block heater improves starting in very cold regions.

A Kia manual takes a different line on warming up: do not wait for the engine to warm up while stationary, drive at moderate engine speeds and avoid hard acceleration or braking. We found no OEM page we read that sets a warm-up time, so we do not give one. If your car is slow to crank in the cold, treat it as a battery question first, which our guide to testing a car battery walks through.

What to Do If Your Car Doesn’t Start: Troubleshooting for Beginners

Match what you hear to the table, run the first safe check, and stop if anything smells of fuel or smoke. The causes below are common patterns from general automotive practice rather than lines from the manuals above, so treat them as where to look first, not as a diagnosis.

What happens	Likely cause	First safe check
Click or rapid clicking, engine does not turn	Weak 12 V battery or poor battery connection	Watch whether the dash lights dim as you try. Then test the battery with our battery health guide. Jump-starting involves a battery, so follow your owner’s manual if you try it.
Nothing happens, no click, maybe a message	Key or fob not detected, fob battery low, pedal not pressed, or wrong gear	Read the dash message. Check that the brake (or clutch) is fully pressed and the shifter is in P or Neutral. Try the fob backup method, the spare key, or a new cell: see fob battery replacement. If a spare works and the main key does not, see how car key chips work.
Slow, heavy cranking	Weak battery, often worse in cold	Turn off lights, climate control and the rear defogger as Honda’s guide advises, wait 30 seconds, and try once more before testing the battery.
Engine cranks normally but does not start	Fuel, spark or an immobilizer problem	Check the fuel gauge and the dash for a key or security light. Do not keep cranking. If it will not start after a couple of spaced tries, call roadside help.

If you are stuck somewhere unsafe, our breakdown guide covers getting out of traffic and getting help. Jump-start safety and battery charging have their own steps in our battery charging guide.

FAQ: Your Car Starting Questions Answered

Do I have to press the brake to start a car?

Yes. Honda’s 2024 Civic page says that if you do not press the brake pedal (or the clutch on a manual) when you press the ENGINE START/STOP button, the mode changes to ACCESSORY instead of starting the engine.

How long should I hold the key or start button?

Only until the engine starts. Honda says not to hold the ENGINE START/STOP button, and a Kia manual says not to press it for more than 10 seconds except with a blown stop lamp fuse. The manuals we read give no longer cranking limit, so if it does not catch, release and wait at least 30 seconds, as Honda advises.

Can I start a push-button car with a dead key fob battery?

Often yes, using a backup method in the manual. Honda’s 2024 Civic page says to touch the H-logo side of the remote to the ENGINE START/STOP button while it flashes, then press the brake (or clutch) and the button within 10 seconds of the beeper. A Kia manual says to press the button with the smart key held at a right angle to it.

Is it safe to warm up a car in the garage?

No. CDC says never to run a car or truck inside a garage attached to a house, even with the garage door open. Honda says the same for remote start. Move the car outside first.

Why does my car click but not start?

A fast click with no cranking often points to a weak 12 V battery or a poor battery connection, though this is a common pattern rather than something the owner’s manuals list. Test the battery before replacing parts.