Si el coche se avería, mi padre lo lleva al arcén y enciende las luces.

Because after si for a real, possible condition, Spanish normally uses the present tense, not the future.

So:

• Si el coche se avería... = If the car breaks down...

This is standard Spanish for real conditions.

Also, the main clause here is in the present:

• mi padre lo lleva al arcén y enciende las luces

That makes the whole sentence sound like a general habit, usual reaction, or instruction-like statement:

• If the car breaks down, my father takes it onto the hard shoulder and turns on the lights.

Spanish does not normally say si + future in this kind of sentence.

Averiarse means to break down, to stop working properly, or to malfunction.

So:

• El coche se avería = The car breaks down

The verb here is averiarse, which is very commonly used for machines, vehicles, appliances, etc.

Compare:

• El coche se averió = The car broke down
• La lavadora se ha averiado = The washing machine has broken down

In this sentence, se is part of the verb averiarse. It is often taught as a pronominal verb here.

It does not mean the car is literally doing something to itself in the way English reflexives work. You should learn averiarse as a set expression meaning:

• to break down
• to go wrong

There is also averiar without se, which usually means to damage or to cause something to break:

• La tormenta averió el motor = The storm damaged the engine

But:

• El motor se averió = The engine broke down

So the se changes the meaning and is important.

Spanish often uses the definite article (el, la, los, las) where English might prefer a possessive like his, her, or their.

So:

• Si el coche se avería... can naturally mean If the car breaks down...
• Depending on context, it may obviously be their car, his car, etc.

Spanish does not always need to mark possession if it is already clear from the situation.

Using su coche would also be possible in some contexts, but el coche sounds very natural when the specific car is understood.

Lo refers to el coche.

So:

• mi padre lo lleva al arcén = my father takes it onto the hard shoulder

Here, lo is a direct object pronoun meaning it.

Because coche is masculine singular, the pronoun is:

• lo

Other direct object pronouns are:

• la = it/her
• los = them (masculine or mixed)
• las = them (feminine)

Because lo is the standard direct object pronoun for a masculine singular thing.

In this sentence, the car is the thing being moved:

• llevar algo = to take something

So:

• mi padre lo lleva = my father takes it

You need a direct object pronoun, not an indirect one.

For a thing like coche, standard Spanish uses:

• lo, not le

You may hear about leísmo in some parts of Spain, but that mainly affects certain people, not inanimate things like cars.

Because a + el contracts to al.

So:

• a el arcén → al arcén

This contraction is mandatory in normal Spanish.

Compare:

• Voy al supermercado = I’m going to the supermarket
• Sube al coche = He/She gets into the car

The only common exception is when el is part of a proper name:

• Voy a El Escorial Not al Escorial

Yes, arcén is a very common Spain Spanish word. It means the hard shoulder or road shoulder.

So:

• llevar el coche al arcén = to move the car onto the hard shoulder

A learner of Spanish from Spain should definitely know arcén.

In Latin America, other words may be used depending on the country, such as:

• acotamiento
• banquina
• berma

But for Spain, arcén is exactly the natural word here.

Because in Spanish it is very natural to talk about a vehicle’s lights in the plural:

• encender las luces = to turn on the lights

A car has more than one light, so the plural is idiomatic.

Depending on context, this could mean:

• the lights in general
• the headlights
• the hazard lights / warning lights

If the context is a breakdown, many learners will understand this as turning on the appropriate warning lights, but the sentence itself literally says the lights.

Very often, yes.

Encender commonly means:

• to switch on
• to turn on
• to light

Examples:

• Encender las luces = to turn on the lights
• Encender la tele = to turn on the TV
• Encender una vela = to light a candle

So in this sentence:

• enciende las luces = he turns on the lights

Because once the subject is clear, Spanish often leaves it out.

Here the structure is:

• mi padre lo lleva al arcén y enciende las luces

The understood subject of both verbs is mi padre:

• mi padre lleva
• (mi padre) enciende

Repeating it would be possible for emphasis, but unnecessary:

• mi padre lo lleva al arcén y mi padre enciende las luces

That sounds more repetitive than natural.

Spanish very often omits repeated subjects when they are obvious.

The present tense here gives the idea of a general truth, habit, or what one does in that situation.

So the sentence sounds like:

• If the car breaks down, my father takes it onto the hard shoulder and turns on the lights.

This is not necessarily describing one specific future event. It can describe:

• a usual response
• a standard procedure
• a general fact

Spanish often uses the present in this way, just like English can.

If you wanted a more specifically future meaning, Spanish could also say something like:

• Si el coche se avería, mi padre lo llevará al arcén y encenderá las luces.

But the present version is completely natural and often more neutral or general.

Sometimes in context, yes, but literally llevar means to take.

So:

• lo lleva al arcén = literally he takes it to the hard shoulder

Since the object is a car, in natural English you might say:

• he pulls it over onto the hard shoulder
• he moves it onto the hard shoulder
• he drives it onto the hard shoulder

So llevar is broader than drive. It focuses on taking something somewhere, not specifically on the act of driving.

Yes, because they mean different things.

• Si el coche se avería = If the car breaks down
• Si el coche está averiado = If the car is broken / is out of order

The first focuses on the event happening. The second focuses on the state/result.

In this sentence, the idea is clearly:

• if the breakdown happens

So se avería is the more natural choice.