How to start a car with an automatic transmission correctly: instructions from A to Z

Starting the engine on a car with automatic transmission (automatic transmission) It just seems like a simple procedure. In practice, even experienced drivers sometimes make mistakes that reduce the life of the box or lead to breakdowns. For example, 2018 Toyota Camry with a classic "automatic" requires a different approach than Nissan Qashqai with variator CVT Xtronic - and this does not take into account the nuances of winter launch or the features of hybrid systems.

In this article we will analyze not only the basic sequence of actions, but also critical points that manufacturers often keep silent in the instructions — for example, why you can’t keep your foot on the brake pedal for more than 30 seconds when starting, or how to properly “wake up” a car after a long period of inactivity. We will pay special attention common myths: no, kick-down won't help you start in cold weather, and running the gas when cold can result in repairs costing 50+ thousand rubles.

Preparing to start: what needs to be done before turning the key

Before inserting the key into the ignition, perform a few mandatory checks. This will take no more than a minute, but will save you from typical problems - from a dead battery to a locked steering wheel.

• 🔑 Check the position of the automatic transmission lever: it must be in mode P (Parking) or N (Neutral). On some models (for example, Honda CR-V) launch is only possible from P - this is written in the electronic control unit.
• 🚗 Make sure the car is on a level surface. A tilt of more than 10° may cause the position sensor to trigger falsely and prevent startup.
• 🔋 Estimate battery charge: if when turning the key to position ON The dashboard lights up dimly or the relay clicks are heard - this is a sign of a discharge. In this case, it is better not to try to start, but to immediately “light” or charge the battery.
• 👣 Check the brake pedal: Press it several times until it stops. If the pedal is “soft” or sinks, there may be a brake fluid leak or a malfunction of the vacuum booster.

Special attention - steering wheel lock. On many modern machines (for example, Volkswagen Tiguan or Hyundai Tucson) it is triggered when the steering wheel is turned after the ignition is turned off. To unlock, insert the key into the lock and at the same time turn the steering wheel left and right with a little force. Do not use excessive force - this may damage the locking mechanism!

Step-by-step instructions: how to start a car with automatic transmission

Now let's move on to the main algorithm. Follow these steps strictly in order - especially if you are driving Mercedes-Benz with the system 7G-Tronic or BMW with Steptronic, where the electronics are sensitive to the sequence of actions.

1. Insert the key into the ignition (or click the button START/STOP on cars with keyless entry, for example, Lexus RX). Make sure that the key fob is inside the passenger compartment - on some models, the engine will not start if the key fob is outside the range of the antenna.

2. Keep the brake pedal depressed. This is a prerequisite for most automatic transmissions, since the electronic control unit (ECU) must “see” the signal from the brake sensor. On Ford Focus with PowerShift or Renault Duster with DP0 starting without pressing the brake pedal is simply impossible.

3. Turn the key to position ON (or click the button START without pressing the brake pedal). Wait until all indicators on the instrument panel go out (for example, CHECK ENGINE, ABS). On Kia Sportage it takes 2-3 seconds, Audi Q5 - up to 5 seconds.

4. Turn the key to position START (or click the button START with the brake pedal pressed). Hold the key in this position for no longer than 3-4 seconds. If the engine does not start, wait 10 seconds and try again. On machines with the system Stop&Start (for example, Peugeot 3008) the first launch may take up to 5 seconds - this is normal.

If the vehicle is equipped immobilizer (and this is 90% of modern cars), after turning the key to position ON wait until the indicator on the dashboard in the form of a car with a key goes out or flashes. On Skoda Octavia it takes 1-2 seconds, Mazda CX-5 - up to 3 seconds. If the indicator continues to light, the immobilizer did not recognize the key and starting will be blocked.

Lever in position P or N|

Brake pedal pressed all the way down|

Key in the ignition (or key fob in the cabin)|

The indicators on the dashboard went out (except the standard ones) -->

Features of starting in cold weather: what to do at −20°C and below

Winter launch is a different story, especially for cars with CVT (for example, Nissan X-Trail with Jatco JF011E) or robotic box (for example, Lada Vesta with AMT). The main problem is thickened oil in the box and a battery that loses up to 50% of its capacity at −25°C.

Here's what to do before Attempt launch:

• ❄️ Turn on the high beams for 10-15 seconds. This will warm up the electrolyte in the battery. On vehicles with LED headlights (e.g. Audi A4) this trick does not work - use low beams or a radio.
• 🔥 Heat the ignition key (if it is metal). Hold it near the stove vent for 1-2 minutes. This is true for old people Toyota Corolla with a mechanical ignition switch, where a frozen cylinder can block the key from turning.
• 🛢️ If the machine has been standing for more than 12 hours at −20°C, before starting, turn on the ignition for 30 seconds (position ON), so that the pump has time to pump the thickened oil. On Volvo XC60 with engine T5 this prevents dry friction in the turbine.

If the engine does not start on the first try:

1. Wait 1 minute before restarting to conserve battery power.
2. On machines with carburetor (for example, old Jeep Cherokee) you can press the gas pedal 1-2 times before starting, but on injection engines (99% of modern cars) this is useless and even harmful.
3. If after 3-4 attempts the engine does not start, check glow plugs (on diesel engines) or ignition coils (on gasoline engines). On BMW 5-series with engine N47 A common problem is glow plug failure at −15°C.

⚠️ Attention: Never try to “overclock” the battery with short starts (1-2 seconds each). This leads to sulfation of the plates and reduces the battery life by 2-3 times. The optimal mode is 3-4 seconds of starter rotation with a pause of 1 minute.

What to do if the car won’t start: diagnosing problems

If the engine does not respond to turning the key or the starter turns idle, the reason may lie in one of 5 systems. Below is a table of typical symptoms and their possible causes:

Symptom	Probable Cause	Solution
When turning the key there is no reaction (the lights on the panel do not light up)	The battery is discharged or disconnected, the ignition switch is faulty	Check the battery terminals, try "lighting" or replacing the battery
The starter turns, but the engine does not catch	No spark (faulty spark plugs, coils), no fuel (clogged injectors, fuel pump not working)	Check spark plugs, fuel pump, fuses
The starter makes a clicking noise but does not turn	The battery is discharged, the starter or solenoid relay is faulty	Charge the battery or replace the starter
The engine starts and immediately stalls	Faulty crankshaft position sensor, air leak in the intake manifold	Diagnostics with a scanner (for example, Launch X431), checking the tightness of the system
The indicator on the dashboard is on AT (Automatic Transmission)	Automatic transmission malfunction (low oil level, solenoid error)	Check the oil level in the box, reset errors using diagnostic equipment

If your car is equipped keyless entry system (for example, Keyless Go on Mercedes or Intelligent Key on Nissan), and the engine does not respond to pressing the button START/STOP, try this:

1. Bring the key fob as close to the button as possible (sometimes it helps to place it directly on the steering wheel).
2. Check if the battery in the key fob is dead - on some models (Ford Mustang) when the key fob is discharged, the car does not recognize the key.
3. If all else fails, insert the key fob into the special slot (usually located next to the button START or in the armrest).

What to do if the steering wheel is locked?

If the steering wheel is locked after turning off the ignition, do not try to pull it with force - this may damage the locking mechanism. Instead:

1. Insert the key into the ignition.

2. At the same time turn the key to position ON and gently rock the steering wheel left and right.

3. As soon as the lock is released, you will feel a slight click. After this, you can start the engine.

If the steering wheel does not unlock, check that the key is fully inserted into the lock (on some models, e.g. Opel Astra, it must be inserted all the way).

Typical mistakes when starting an automatic transmission: what not to do

Even experienced drivers sometimes make mistakes that eventually lead to serious damage. Here TOP 5 most destructive habits:

• 🚫 Start with lever in position D or R. This leads to a sharp jerk and wear of the automatic transmission clutches. On Honda Accord with ZF 9HP such an error can damage the torque converter in 2-3 years.
• 🚫 Holding the key in position for a long time START (more than 5 seconds). This overheats the starter and drains the battery. On Mitsubishi Outlander with the system S-AWC The starter fails after 20-30 such starts.
• 🚫 Pressing the gas pedal when starting. On injection engines this is useless, but on cars with direct injection (for example, Volkswagen Passat with TSI) can lead to flooding of candles.
• 🚫 Ignoring the indicator AT on the panel. If it lights up yellow or red, this is a signal of an automatic transmission malfunction. For example, on Hyundai Santa Fe this may indicate low oil level in the box.
• 🚫 Launch from a tug or pusher. This is deadly for an automatic transmission - the oil pump only works when the engine is running, and without lubrication, the box will fail within a few meters.

⚠️ Attention: On hybrid vehicles (e.g. Toyota Prius or Lexus ES) never press the gas pedal when starting - this may lead to activation of the electric motor in the wrong mode and an error P0A0F (inverter malfunction).

Another common mistake is using mode N (Neutral) for coasting. At speeds above 20 km/h, this leads to “oil starvation” of the automatic transmission, since the pump does not provide sufficient pressure. On Ford Explorer with 6F35 This practice leads to wear of the shaft bearings within 40-50 thousand km.

How to start a car with a button START/STOP: nuances of Keyless systems

Cars with keyless entry (for example, BMW 3 Series, Audi A6, Lexus NX) have their own launch characteristics. Main rule: the key fob must be inside the car, otherwise the immobilizer system will block the start.

Launch algorithm:

1. Make sure the automatic transmission lever is in position P.
2. Press the brake pedal all the way down.
3. Click the button START/STOP once (no hold). On Jaguar XE Holding the button for more than 2 seconds puts the system into diagnostic mode.
4. Wait until the immobilizer indicator on the dashboard goes off (usually 1-3 seconds).
5. Click the button again START/STOP (already with a hold, if required). The engine should start.

If the machine does not respond to pressing a button:

• 🔋 Check the battery charge in the key fob (on Land Rover Discovery when the key fob is discharged, the car does not recognize the key even in the passenger compartment).
• 📍 Move the key fob closer to the button START/STOP (on Porsche Macan The reading antenna is located under the steering wheel).
• 🔑 On some models (for example, Infiniti QX60) there is a backup slot for the key fob - insert it there if the contactless start does not work.

On hybrid vehicles (eg Toyota RAV4 Hybrid) button START/STOP has three modes:

• One short press — turning on the ignition (ON).
• Pressing without the brake pedal — start only the electric motor (silent mode).
• Pressing with the brake pedal — starting the internal combustion engine.

Warming up a car with automatic transmission: how much to warm up and how to do it correctly

The issue of warming up is the most controversial. Manufacturers (eg Mercedes-Benz or Volvo) claim that modern engines do not need long warm-up, but this is only true for warm season. In winter or at temperatures below +5°C, ignoring heating leads to:

• ❄️ Accelerated wear torque converter (due to thick oil in the automatic transmission).
• ❄️ Increased fuel consumption (up to 20% in the first 5 km).
• ❄️ Risk of damage crankshaft oil seals (on Subaru Forester with EJ25 this is a common problem).

Optimal warm-up algorithm:

1. Summer (above +10°C): 10-15 seconds of idling is enough, after which you can start driving at low speeds (up to 2000 rpm).
2. Winter (0°C to −10°C): Warm up the engine for 1-2 minutes, then drive 1-2 km at a speed not exceeding 40 km/h, avoiding sudden acceleration.
3. Severe frost (below −20°C):
   • Warm up the engine for 3-5 minutes (until the idle speed stabilizes).
   • For the first 500 meters, move at a speed of 20-30 km/h.
   • Avoid turning on Overdrive (if there is a button) or manual mode M.

For vehicles with CVT (for example, Nissan Murano with Jatco JF010E) warming up is especially important: cold oil in the variator loses its properties, and the belt slips, accelerating wear. On such cars, it is better to avoid sudden acceleration and braking for the first 5-10 km.

⚠️ Attention: On machines with turbo engine (for example, BMW 1 Series with B48) never accelerate when cold - this leads to turbine oil starvation and its failure. Optimal: starting, 30 seconds of warming up, then a smooth start to movement.

FAQ: answers to frequently asked questions

Is it possible to start a car with an automatic transmission without pressing the brake?

On most modern cars, no. The electronic control unit (ECU) requires a signal from the brake pedal sensor to unlock the starter. The exception is some older models (for example, Chevrolet Lacetti until 2010), where launch is possible in the position N without brake. However, even with them it is unsafe: if the lever is accidentally in D or R, the car will jerk forward or backward.

What to do if the key does not turn in the ignition?

There may be several reasons:

• 🔒 Steering lock — try turning the key and gently rocking the steering wheel at the same time.
• 🔑 Key or lock worn out - try the spare key. On Ford Mondeo 4th generation this is a common problem.
• ❄️ Freezing of the lock cylinder - heat the key or use a defroster (for example, WD-40).
• 🚨 Immobilizer triggered — check whether the indicator on the panel is flashing (car with a key).

If all else fails, do not use force - contact an auto electrician.

How many times can you turn the starter if the car won't start?

Optimal mode:

• 3-4 attempts, 3-4 seconds each.
• The pause between attempts is at least 30 seconds (to restore the battery charge).
• If after 4-5 attempts the engine does not start, further attempts will only drain the battery.

On diesel engines (for example, Volkswagen Amarok with V6 TDI) the starter can be turned longer - up to 5-6 seconds, since a diesel engine needs time to warm up the glow plugs.

Is it possible to push start a car with an automatic transmission?

Absolutely not. Unlike a manual transmission, the oil pump in an automatic transmission only works when the engine is running. When towing, the box remains without lubrication, which leads to:

• Bearings and gears wear out within a few hundred meters.
• Overheating and jamming of the torque converter.
• Failure of solenoids and clutches (repair from 30,000 rubles).

The only exception is if the car is already started, but stalls while driving. In this case you can once try to start at a speed of 30-40 km/h, turning on N and then D. But it's risky!

Is it necessary to warm up a car with an automatic transmission in the summer?

Yes, but not as long as in winter. Enough:

• 10-15 seconds of idling (to stabilize oil pressure).
• The first 1-2 km of driving without sudden acceleration (especially with CVTs).

Ignoring even short warm-up in summer leads to:

• Accelerated wear torque converter (due to thick oil).
• Increased fuel consumption in the first kilometers.
• Jerks when changing gears (on Mitsubishi ASX with CVT this manifests itself as "kicks").