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 transmission or lead to breakdowns. In this article we will analyze not only the basic sequence of actions, but also technical nuances for different types of automatic transmissions - from a classic torque converter to robots with two clutches (DSG, Powershift).

We will pay special attention critical errors during cold starts in winter, which 90% of drivers commit due to ignorance of the operating principles of the machine. For example, why can’t you drive immediately after starting the engine in cold weather, even if the temperature needle has moved. We’ll also explain how to properly “tow” a car if the battery is dead - you won’t find this point in standard instructions.

Preparing to start: what to check before turning the key

Before inserting the key into the ignition, follow these 3 mandatory steps. Ignoring them can lead to steering wheel lock, an alarm or even damage to the starter. This is especially true for cars with a button Start/Stop Engine (for example, Toyota Camry, Hyundai Solaris).

  • 🔑 Check the steering wheel position: If it is locked (usually after turning the wheels while parked), turn it slightly left and right while turning the key. On some models (Volkswagen Passat B6) the locking is activated even at the slightest tilt.
  • 🚗 Make sure the selector lever is in neutral position: the light on the instrument panel should be on N or P. If there is no indicator, do not turn the key!
  • 🔋 Turn off energy-intensive consumers: headlights, heated seats, air conditioning. On vehicles with a weak battery (e.g. Renault Logan after 5 years of operation) this can lead to a voltage drop and ECU failure.

On machines with keyless entry (Keyless Go) it is important that the key fob is within the antenna coverage area (usually within a radius of 1–1.5 m from the passenger compartment). If the indicator on the dashboard flashes yellow, the system does not recognize the key and the engine will not start. In this case, try bringing the key fob directly to the button Start or insert it into a special slot (if provided).

💡

On some models BMW and Mercedes-Benz After replacing the battery, the key needs to be “retrained”. To do this, you need to turn on the ignition 3 times in a row without starting the engine, waiting for the sound signal.

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

The starting algorithm depends on the type of box and ignition system. Below is a universal diagram suitable for 95% of cars with automatic transmission, including variators (CVT) and robots (AMT, DSG). For convenience, we have divided the process into stages with explanations for each.

Press the brake pedal all the way down|Make sure the selector lever is in position P or N|Insert the key and turn to the ON position (or press Start without the gas pedal)|Wait for the self-test to complete (the lights on the panel go out)|Turn the key all the way or hold the Start button for 1-2 seconds|After starting, do not release the brake until you switch to D/R mode-->

Action For automatic transmission with key For automatic transmission with Start button Notes
Preparation Insert the key into the lock Make sure the key fob is inside On Nissan Qashqai the keychain should be in the cup holder
Selector position P or N P or N On DSG-7 launch is only possible in P
Ignition Turn the key to ON, wait for self-diagnosis Click Start without brake pedal (ignition only) On Mazda CX-5 self-diagnosis lasts up to 5 seconds
Starting the engine Turn the key all the way, hold for 1–2 seconds Click Start with the brake pedal pressed On Honda CR-V the button must be held for 3 seconds

After successful engine start don't rush to go right away. Allow the oil in the automatic transmission to warm up for at least 30–60 seconds (depending on the air temperature). On the dashboard of some cars (Ford Focus, Kia Rio) there is a transmission fluid temperature indicator - wait until it shows at least 20–30°C.

💡

Starting the engine in selector position D or R will cause the car to jerk and may damage the transmission. This is one of the most common causes of automatic transmission breakdowns for beginners.

Frequent startup errors: what breaks the automatic transmission

Even minor flaws in the startup procedure accumulate over time and lead to serious malfunctions. We have collected TOP-5 errors, which technicians diagnose in 80% of cases with automatic transmission problems. Some of them seem harmless, but in fact they reduce the life of the box by 20-30%.

  • 🚫 Starting without pressing the brake: on most modern cars (Audi A4, Skoda Octavia) this blocks the starter, but on older models (Toyota Corolla E120) may cause the machine to move spontaneously.
  • ❄️ Holding the key in the “Start” position for a long time: If the engine does not start the first time, pause for 10–15 seconds. On Nissan CVTs (for example, X-Trail T31) this can burn the starter.
  • 🔄 Switching selector until fully started: if you start moving the automatic transmission lever while the starter is rotating, this causes micro-shorts in the gearbox solenoids (for example, on a Chevrolet Cruze).
  • 🔋 Starting with a dead battery: If the voltage is below 11.5 V, the automatic transmission ECU may not initialize the valve body correctly, which leads to kicks when shifting gears.
  • 🛑 Ignoring Error Signals: if the panel lights up AT Temp or Check Transmission, starting the engine may make the problem worse (for example, on Hyundai Santa Fe with automatic transmission A6MF1).

The error with starting in mode N (neutral). Many drivers think it is safe, but in reality:

⚠️ Attention: In position N There is no blocking of the automatic transmission output shaft. If the car is parked on a slope, it may roll even with the engine running. Always use the parking brake (handbrake) or mode P (parking).

Beginner (less than a year)|Experienced driver (1–5 years)|Pro (more than 5 years)|Recently switched from manual mechanics-->

Features of starting in winter: how not to kill the automatic transmission in cold weather

Cold start is the most dangerous mode for an automatic transmission. At temperatures below –15°C, the oil in the automatic transmission thickens, and the first seconds after starting the box runs dry. This leads to accelerated wear of clutches and bearings. To avoid problems, follow winter algorithm:

  1. Warming up the battery: Before starting, turn on the high beam headlights for 10–15 seconds (this will warm up the electrolyte in the battery). On vehicles with Start-Stop system (Ford Kuga, Peugeot 3008) this is required.
  2. Brief ignition switches: Turn the key to position 2-3 times ON (without starting) so that the automatic transmission ECU initializes the sensors. On Jatco CVTs (for example, Nissan Juke) this reduces the warm-up time.
  3. Starting with the brake applied: This prevents the car from jerking if the selector lever is accidentally in D or R.
  4. Warming up at idle: minimum 2–3 minutes (until idle speed ~800 rpm). On DSG-6 (Volkswagen Tiguan) warming up should last until the cooling fan operates.

If the car does not start the first time, do not turn the starter for more than 5 seconds. The pause between attempts must be at least 20 seconds. On machines with turbo engines (Subaru Forester, Mazda CX-9) after 3 unsuccessful attempts, you need to take a break of 5–10 minutes to avoid overheating of the catalyst.

What to do if the automatic transmission does not shift gears after a cold start?

If, after warming up the engine, the transmission “freezes” in 1st gear or shifts jerkily, this is a sign thickened oil in the valve body. Don't try to drive - it will make the problem worse. Turn off the engine and let the oil warm up for another 5–7 minutes at idle speed. If the situation has not changed, check the transmission fluid level (on some models, for example Honda Accord, for this you need to warm the box to 60°C).

How to start a car with automatic transmission if the battery is dead

The situation when the battery is discharged and the automatic transmission does not allow you to start the engine “from the pusher” is familiar to many. Unlike a manual transmission, towing a car with an automatic transmission has strict restrictions. Here 3 proven methods launches that will not damage the transmission:

  • 🔋 Lighting from another car: connect the wires in sequence + donor → + recipient → – donor → recipient mass. On machines with Start-Stop system (BMW X5) First disconnect the negative terminal of the battery.
  • 🔌 Using a starter charger (booster): Connect terminals only in selector position P. On CVTs (Mitsubishi Outlander) booster voltage should not exceed 14.4 V.
  • 🚛 Towing (select models only!): Only permitted for vehicles with Old style automatic transmission (for example, Toyota Camry V40 until 2006). Towing speed is no higher than 30 km/h, distance is no more than 50 m.

If you decide to tow a car with an automatic transmission, remember:

⚠️ Attention: Towing vehicles with CVT (Nissan Murano), robot DSG (Skoda Superb) or hybrid transmission (Toyota Prius) is strictly prohibited! This will destroy the CVT belt or clutches. In such cases, only a tow truck remains.

For vehicles with Keyless Go system (Lexus RX, Infiniti QX50) there is a nuance: if the battery is completely discharged, the electronic key may not be recognized. In this case, you need to bring the key fob directly to the button Start or in a special slot (usually next to the automatic transmission lever).

Differences in starting on different types of automatic transmissions

Not all automatic transmissions are the same. The startup algorithm may differ depending on the transmission design. Below we have collected key features for the most common types of automatic transmissions.

Automatic transmission type Launch Features Examples of cars Common problems
Classic torque converter Launch possible in P and N. On some models (Mercedes W210) you need to press the brake pedal even in P. Toyota Camry, Honda CR-V, Kia Sorento Wear of the valve body due to frequent cold starts
CVT (CVT) Warming up for at least 1–2 minutes is required. On Nissan Do not start the engine at a tilt of more than 10°. Nissan Qashqai, Subaru Outback, Mitsubishi ASX Belt overheating when starting in cold temperatures below –20°C
Single Clutch Robot (AMT) Launch only in N (on Lada Granta) or P (on Ford Fiesta). Be sure to press the brake pedal. Lada Vesta, Renault Sandero, Dacia Duster Clutch burning when starting with the gas pedal pressed
Robot with two clutches (DSG, Powershift) On Volkswagen and Audi you need to hold the button Start at least 2 seconds. Launch in N prohibited. Volkswagen Golf, Audi A3, Ford Focus Mechatronics wear and tear due to frequent short trips

On hybrid cars (Toyota RAV4 Hybrid, Lexus UX) the internal combustion engine (ICE) starts automatically under certain conditions, but there are nuances:

  • If the hybrid system battery is discharged, the car can only be started in Ready (without starting the internal combustion engine).
  • In cold weather below -10°C, the system can forcefully start the internal combustion engine to warm up the catalyst, even if the car is stationary.

What to do if a car with automatic transmission does not start

If the engine does not respond to turning the key or pressing a button Start, don't panic. In 60% of cases, the problem is solved without calling a tow truck. We have compiled diagnostic card for quick troubleshooting:

  • 🔴 Nothing happens when I turn the key:
    • Check the starter fuse (usually F10 or F20 in the block under the hood).
    • Make sure the selector is in P (on some Ford the lock works even in N).
    • Try starting the engine by closing the starter directly (for experienced drivers only!).
  • 🔊 The starter turns, but the engine does not start:
    • Check the presence of gasoline (at diesel cars, for example Volkswagen Passat TDI, the fuel may have thickened).
    • If the panel lights up Check Engine, reset the error by disconnecting the battery for 10 minutes.
    • On machines with gas equipment (HBO) switch to gasoline.
  • ⚡ Clicks, but the starter does not turn:
    • The battery is low - try lighting it or using a booster.
    • The terminals are oxidized - clean them with sandpaper.
    • On BMW and Mercedes Theft protection may work - the ECU needs to be rebooted.

If the problem is immobilizer (the key light flashes), try the following:

  1. Insert the second key (if available) and try again.
  2. Disconnect the battery for 5-10 minutes to reset the error.
  3. On some Chinese cars (Geely Emgrand) helps by pressing the button on the key fob with the ignition on.
💡

If the car does not start after washing or rain, check moisture entering the fuse box under the hood. On Kia Ceed and Hyundai Elantra This is a common problem - just dry the contacts with a hairdryer.

FAQ: Answers to frequently asked questions

Is it possible to start a car with an automatic transmission in N (neutral) mode?

Technically yes, but this not recommended. In position N There is no blocking of the output shaft, and the car may roll on a slope. In addition, on some models (Mazda 6) launch in N leads to an error in the automatic transmission ECU, which is reset only after the system is rebooted.

Why does the engine immediately stall after starting?

There are several reasons:

  • Defective throttle position sensor (on Opel Astra H this is a common problem).
  • Crowded injectors or fuel filter (relevant for diesel cars after refueling at questionable gas stations).
  • On machines with HBO could have gone astray ignition timing.
  • If the problem appears after washing, check water entering the air intake.

For diagnostics, connect the scanner ELM327 and check for protocol errors OBD-II.

Do I need to press the brake when starting from the Start/Stop button?

Yes, necessarily. On most cars (Toyota RAV4, Mazda CX-5) the system simply will not allow you to start the engine without pressing the brake pedal. Exception - some models Mercedes-Benz with function Easy-Start, where the first start is possible without a brake, but subsequent starts only with it.

What happens if you start a car with an automatic transmission in D or R mode?

The consequences depend on the model:

  • On most cars (Hyundai Solaris, Kia Rio) the starter lock will work - the engine simply will not start.
  • On old automatic transmissions (Toyota Corolla E110) possible jerk forward or backward, which can lead to an accident.
  • On CVTs (Nissan Note) this often causes an error P1705 (torque converter lock-up malfunction).

In all cases try again only after moving the selector to P.

How to start a car with automatic transmission if the selector is broken?

If the gearbox lever is jammed (for example, after an accident or due to a broken cable), you can try the following:

  1. Move the selector to position N manually by removing the decorative trim around the lever and pressing the lock on the box.
  2. On some models (Ford Mondeo) yes emergency release under the plastic plug next to the selector.
  3. If the selector is completely faulty, you will have to tow the car with the drive wheels hanging out (for front-wheel drive) or on a tow truck.

⚠️ Attention: Do not try to force the lever - this may break the gear selection mechanism!