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Auto Electrical Repair in Carlsbad, CA
Car won't start, lights flicker or the battery keeps dying? At our Palomar Airport Road shop in Carlsbad we test the battery, alternator, starter and wiring with meters to find the part that failed, then give you a written estimate before any repair. All makes of cars, trucks and SUVs. Book online or call (760) 814-2021.

$20 off
electrical repair
on qualifying repairs of $200 or more before tax
Good through . One coupon per visit; not combined with other offers. Mention or show this coupon when your estimate is written — honored for walk-ins and phone customers too. Many repairs involve additional parts or labor at extra cost; your written estimate shows the total before any work. Carlsbad Auto Repair & Smog · 2509 Palomar Airport Road, Carlsbad, CA 92011 · BAR license #311178 · (760) 814-2021.
Electrical problems are where parts-swapping gets expensive. A car that will not start may have a bad battery, a failing alternator, a corroded cable, or something draining power overnight. We test each piece before recommending a repair.
- ASE-certified technicians
- Written estimate before any work
- BAR licensed station #311178
- Walk-ins welcome
Electrical warning signs
- Slow crank or a click when you turn the key
- A weak battery, loose or corroded cables, or a failing starter.
- Battery dies after sitting overnight
- A parasitic drain: something staying on after the car is off.
- Battery light on while driving
- The alternator is not charging, or the belt driving it has slipped or broken.
- Dim or flickering lights
- A charging problem or a poor ground connection.
- Power window slow, stuck, or dropping into the door
- A failing window motor, switch, or regulator.
- Fuses that keep blowing
- A short to ground somewhere in that circuit.
- Several unrelated warning lights at once
- Low system voltage or a communication fault between modules.
How electrical repair works here
Electrical faults are traced with test equipment, one circuit at a time.
Inspect
We load-test the battery, measure charging voltage, check starter draw, and scan for stored codes. For drains and shorts, we trace the circuit.
Explain and estimate
We show you the test results and what failed. You get a written estimate. If tracing a fault takes more time, we tell you up front and get your OK.
You approve
You decide what we repair.
Repair
We replace the failed part or repair the wiring, connector, or ground.
Road test
We retest the system and confirm the fault is gone, including an overnight drain check when that was the problem.
California's Bureau of Automotive Repair requires a written estimate and your authorization before work begins, and if we find something new partway through, we stop and ask before going further.
Electrical services
- Battery testing and replacement
- Battery terminal and cable service
- Charging system and alternator diagnosis
- Starting system and starter diagnosis
- Parasitic drain diagnosis
- Power window repair
- Side view mirror repair
- Wiring, connector, and fuse circuit repair

Why customers choose us
Test before replacing.
A new battery will not fix a bad alternator, and we check both.

Makes we service
- Toyota
- Honda
- Ford
- Jeep
- Mercedes-Benz
- Mazda
- Subaru
- BMW
- Audi
- Lexus
- Hyundai
- Chevrolet
- Nissan
- Kia
- Volkswagen
- Acura
- GMC
- Porsche
- Cadillac
- Dodge
- Volvo
- Land Rover
- Mini
- Infiniti
- Buick
- Lincoln
- Ram
- Mitsubishi
- Scion
- Chrysler
Recently in our bay: Toyota Prius, Honda Civic, Honda CR-V, Mini, BMW X1, Audi A4, Mercedes-Benz E-Class, Jeep Patriot, Ford Fusion, Mazda 3.
Not on the list? Call and ask. We service most cars, trucks, and SUVs on the road.
What customers say about the shop
General Google reviews of Carlsbad Auto Repair & Smog. They are not about electrical repair specifically.
5 out of 5 stars
“This is my first time coming here and … was so helpful and friendly. … The service was very quick and efficient. I would highly recommend this location.”
5 out of 5 stars
“Super efficient. I would recommend this to anyone. I came here with both of my cars …”
5 out of 5 stars
“… The perfect San Diego vibe! Kind, professional and easy going. Will definitely recommend this place and be back myself!”
Frequently asked questions
Is it the battery or the alternator?
We test both. A battery that will not hold a charge fails a load test. An alternator that is not charging shows low voltage with the engine running. Sometimes it is both.
How long do car batteries last?
It varies with the battery, the car, and how it is driven. Heat is hard on batteries. We test yours and tell you how it is doing.
Why does my battery die overnight?
Something is drawing power with the car off: a module that stays awake, a light, or an aftermarket accessory. We measure the drain and trace it to the circuit.
Can you fix a power window that fell into the door?
Yes. It is usually the regulator or motor. We remove the door panel, find which one failed, and give you an estimate.
Do you work on hybrid electrical systems?
We test and replace 12-volt batteries and repair standard circuits on hybrids. Ask us about your specific concern when you book.
Location, hours, and service area
| Day | Hours |
|---|---|
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | 8 AM–4 PM |
| Sunday | 9 AM–4 PM |
Carlsbad Auto Repair & Smog
2509 Palomar Airport Road, Carlsbad, CA 92011
(760) 814-2021
Carlsbad Auto Repair & Smog · 2509 Palomar Airport Road, Carlsbad, CA 92011 · BAR license #311178 · (760) 814-2021
We trace electrical faults for drivers from Poinsettia, Kelly Ranch, Oceanside and Encinitas.
Get the electrical problem traced
Tell us when it happens, such as cold mornings, after sitting, or while driving, and we will start there.
$20 off
electrical repair
on qualifying repairs of $200 or more before tax
Good through . One coupon per visit; not combined with other offers. Mention or show this coupon when your estimate is written — honored for walk-ins and phone customers too. Many repairs involve additional parts or labor at extra cost; your written estimate shows the total before any work. Carlsbad Auto Repair & Smog · 2509 Palomar Airport Road, Carlsbad, CA 92011 · BAR license #311178 · (760) 814-2021.