Saltar al contenido principal


Hice una guía aparte para esta MacBook Pro en particular porque tiene el nuevo chip Apple T2 y requiere un procedimiento diferente al de otras portátiles Mac.

  1. Cómo restablecer el SMC, PRAM y NVRAM en una MacBook Pro Touch Bar 2018, Restablecimiento del SMC, parte 1: paso 1, imagen 1 de 1
    • Ve al menú de Apple > Apagar equipo.

    • Luego de que tu Mac se apague, presiona y mantén el botón de encendido por 10 segundos.

    • Suelta el botón de encendido, luego espera unos segundos.

    • Presiona el botón de encendido de nuevo para encender tu Mac.

    • Si estos procedimientos no solucionan el problema, sigue al Paso 2.

    j’ai un macbook pro touch bar 15” 2018 qui se relance quasiment dès qu’il s’est éteint. Ventilos toujours à fond. Du coup impossible d’effectuer ces manip pour réinitialiser la SMC…

    Gambini - Contestar

    Bonjour, comme vu sur cette documentation officielle effectuer l’étape 2 de ce tutoriel devrait résoudre votre problème compris si l’ordinateur s’allume pendant la manipulation

    Cajuteq -

  2. Cómo restablecer el SMC, PRAM y NVRAM en una MacBook Pro Touch Bar 2018, Restablecimiento del SMC, parte 2: paso 2, imagen 1 de 1
    • Ve al menú de Apple > Apagar equipo.

    • Luego de que tu Mac se apague, presiona y mantén la tecla Mayúsculas (Shift) izquierda y las teclas Option y Control izquierdas por 7 segundos. Luego sigue manteniendo esas teclas mientras presionas y mantienes el botón de encendido por otros 7 segundos.

    • Suelta las tres teclas y el botón de encendido, entonces espera unos segundos.

    • Presiona el botón de encendido otra vez para encender tu Mac.

    Not right shift key, left. Holding the right shift key in this scenario will result in your Mac just starting up when you press the power button with the other keys down.

    William Cerniuk - Contestar

    Thank you!!!! Every place I looked told me to hold the right shift key but it only works with the left shift key. I was going crazy.

    Loren Brown -

    Thanks a lot! It repaired my Macbook Pro 2018 right side USBs!

    Your project is the best! Love you guys!

    P.S: I used the right shift key.

    Vyacheslav A. - Contestar

    Only left shift worked for me! Thanks!

    Aaron G - Contestar

    I do not understand when you say, yes it works! What works? How do I know it won’t shut down again dropping from 45 % to 2% in a second? I have done what you said with both left and right shift key. The left key does not work…when I do use the right key and count 7 seconds and then with the power button with 7 secs, my mac air starts up after 5 seconds already…is that good. I have not dared to work further than 45 % anymore and plug int the charger again. I see the battery percentage is draining super fast and is slow in charging…like 3 hrs for a full 100%. So, I done what you said, should I risk working beyond 45% ? Every time it shuts down to 2 %, I have less battery time. This is my replacement battery from only 3 months ago. And it does have the same problem as the former battery….This is an urgent matter.

    Alann De Vuyst - Contestar

  3. Cómo restablecer el SMC, PRAM y NVRAM en una MacBook Pro Touch Bar 2018, Restablecimiento de PRAM/NVRAM: paso 3, imagen 1 de 1
    • Apaga tu Mac.

    • Luego enciéndela e inmediatamente presiona y mantén estas cuatro teclas al mismo tiempo: Option, Command, P y R.

    • Puedes soltar las teclas luego de 20 segundos, durante los cuales tu Mac podría parecer que se está reiniciando.

    • Puedes soltar las teclas luego de que el logo de Apple aparezca y desaparezca la segunda vez, o luego de 20 segundos. Lo que ocurra primero.

    I’am having the exact same problem and same device, same software.

    MacBook is starting up exactly the same way as without holding these 4 buttons.

    might the be an wiring issue?

    dirt under trackpad, producing a permanent touch without movement, interrupting the keyboard inputs?

    keverbeek - Contestar


¿Aún no funciona luego de estos restablecimientos? Nuestros amigables usuarios en el foro de Respuestas quizás puedan ayudarte.

38 personas más completaron esta guía.

Un agradecimiento especial a estos traductores:

en es


Estos traductores nos están ayudando a reparar el mundo! ¿Quieres contribuir?
Empezar a traducir ›


Miembro Desde 28/08/18

24,294 Reputación

21 Guías creadas

17 comentarios

Macbook Pro 2018, 15” (I presuming no difference in operation).

After your Mac shuts down, press and hold the right Shift key, the left Option key, and the left Control key for 7 seconds. Then keep holding those keys while you press and hold the power button for another 7 seconds.

The Macbook fires up as soon as the touchbar power button is pressed. Depressing all ⇧⌃⌥⎋ together, or depressing ⇧⌃⌥ and then adding ⎋ makes no difference. Depressing! ,-)

Icarus - Contestar

got the same in MBP 2018 Touchbar!!!

Bart - Contestar

Nope. Doesn’t work on a 2018 MacBook Pro with Touchbar. Pressing any key boots up the computer and holding Command-Option-P-R doesn’t have any effect as it did on previous models.

Brian Tully - Contestar

Yep, new macbooks behave terribly on boot. It’s probably part of the problem. Did anyone ask for this “start on lid open” BS?

Richard Cook - Contestar

SOlution: do not press the right shift key!!!! Press all the keys on the left side of the keyboard including the Shift key- otherwise it will power on your MAc normally. IF you do the left side it wont power - do this for 10 sec then release and then power on normally- this will reset the SMC on touch bar MBP

bargain hunters - Contestar

This guide is correct. I’m not sure what you are all talking about. It’s the right shift key, left option and command. 7 seconds then add power for 7 seconds for SMC

NVRAM on 2018 DOES work, you will simply see a blank black screen, the display will shut off and then come on again. There’s no chime, but it does reset NVRAM

Ryan Boosel -

+1! I had the same problem where the computer would just boot up as normal on a 13” 2017 model, but this did it.

Calum Smith -

And if MBP doesn’t turn on!!??? It was slow to charge… the battery icon showed up in middle of screen when hitting any button with a red depleted battery symbol flashing even though it was plugged in. Did the SMC reset, will not turn on or respond at all. I don’t even get the dead battery icon anymore. Now what!?

Blythe Preston - Contestar

Anybody knows how to do that in a MacBook Pro 13inch MBP13,3. None of those works in it…

Thanks and Happy new year!!!

Richard Yanes - Contestar

i am buy new mackbook pro2018 13 inch and after open the mackbook , i found massage condeation : replace baterry , this baterry count 1 but no charge ! what i can do ?

Amassi Group - Contestar

You should probably ask your local reseller to check your device while it’s guaranteed…

Cajuteq -


i have the same issue. Cycle count 1, voltage (mV) 4330,

macbook pro 13 2018

battery condition: replace

have you managed to solve’it?

does any one know how to solve this ?

is there a way to charge the battery disconected from the mainboard?

the laptop is new , was not used from 2018!

thank u

Cosmin -

Can anyone tell me where the Power Button in Macbook Pro 2018 Touch Bar is?

Thu Mon Gia - Contestar

Hi, as said in the teardown of this machine : “The Touch ID sensor doubles as the power switch” this means it should be on the far right of the Touch Bar, unfortunately I don’t own on so that I can’t check for sure. Anyway, if it is only to start up the computer, you may refer to on how to start a Mac. Hopes this helps.

Cajuteq -

Here is the correct information for how to reset SMC.

It depends on T2 Security Chip/ T1 Security Chip on your Mac.

(You can check a security chip model by pressing “option key and apple logo icon on the left upper corner on the screen and click “System information” and click “controller”.)

For T2 Security Chip;

Control: on the left side of your keyboard

Option: on the left side of your keyboard

Shift: on the right side of your keyboard

For T1 Security Chip;

Control: on the left side of your keyboard

Option: on the left side of your keyboard

Shift: on the left side of your keyboard

Kyungil Kong - Contestar

do you have some suggestion also for a screen that doesn’t even swich on?

flash - Contestar

I need help I have macbook air 2014 high Serra I don't know why it get battery full charged after it reaches 30 something and using it from 100 it reaches around 80 normally and suddenly it drains upto 7 I have done calibration and all the reset and those option given above it's still not fixed what should I do

Khangembam Nganba Singh - Contestar

Agregar Comentario

Ver Estadísticas:

Ultimas 24 horas: 409

Ultimos 7 días: 2,335

Ultimos 30 días: 11,717

Todo El Tiempo: 405,725