What you’ll learn
- Understand how your car’s electrical system works and what the dashboard warning lights mean
- Check the battery and charging with a multimeter, and jump-start the right way
- Find a blown fuse and replace it with the right one
- Work out step by step why the car won’t start, and read OBD-II codes
- Get the car ready for winter and long trips: diesel starting, the parking heater, a checklist
- Wire in a dashcam, head unit and lights without damaging the wiring
Syllabus
17 lessons · about 124 minutes · The pictures in the lessons are animated, and every lesson has a hands-on trainer or lab, so you can try what it describes yourself.
How a car’s electrical system works
What a car’s electrical system is made of and what each part does: battery, alternator, starter, ground, fuses, relays and control units.
6 min · 4 questionsfreeBattery: charge, winter, jump-starting
How to tell a battery’s charge from its voltage, why it lets you down in winter, and how to jump-start and charge it properly.
7 min · 4 questionsfreeFuses and relays
Where the fuses and relays are in a car, how to check and replace them, what the colors mean, and why you must never fit a higher rating or bypass a fuse with wire.
6 min · 4 questionsfreeDashboard warning lights
What red, yellow and green lights on the dash mean, and when you must not keep driving.
6 min · 4 questionsfreeA multimeter for drivers
How to use a multimeter to check the battery and charging, find a blown fuse and do a simple parasitic draw test.
8 min · 4 questionsfreeWhy the car won’t start
Step-by-step logic: starter, dashboard and immobilizer, fuel pump priming, fault codes — from simple to complex.
7 min · 4 questionsfree
Show lessons 7–17
OBD-II fault codes
What OBD-II is, how to read codes, what the letters and numbers mean, and why you shouldn’t just clear the codes.
7 min · 4 questionsfreeHow to describe a problem to a mechanic and not overpay
What to write down about a problem before you see a mechanic, what to ask about price, timing and warranty, which scan report to ask for, and the signs that you’re being sold parts you don’t need.
9 min · 4 questionsfreeSafety: high voltage, airbags, carbon monoxide
Where a car’s electrics and exhaust are genuinely dangerous: hybrids and EVs, airbags, xenon lights, carbon monoxide and working under the hood.
7 min · 4 questionsfreeHybrids and EVs: what owners need to know
How to charge safely at home and at a station, why the car won’t switch on because of its small 12 V battery, what happens to range in winter, how to transport it, and what an owner must not touch.
9 min · 4 questionsfreeStarting a diesel in winter
How glow plugs and preheating work, why fuel matters in winter, and what to do if your diesel won’t start in the cold.
7 min · 4 questionsfreeParking heater: using it without mistakes
How to switch a parking heater on and off properly, why it goes into a fault, and what you can check yourself before heading to a mechanic.
7 min · 4 questionsfreeCar alarm and remote start
Why a car alarm can drain the battery and stop the key fob from working, how to unlock and start the car with the key, and when you need an installer.
7 min · 4 questionsfreeDashcam, head unit, lights: wiring them in properly
How to connect a dashcam, a USB charger, a head unit and auxiliary lights without burning the wiring or causing faults in the car.
8 min · 4 questionsfreeLighting: bulbs, LED, xenon and headlight aim
Which bulbs your headlights use and how to replace them, why you can’t put xenon or LED bulbs in halogen headlights, where the “bulb out” error comes from, and how to check headlight aim.
7 min · 4 questionsfreeSimple DIY jobs: wiper blades, washer, defrosters, alternator belt
How to replace wiper blades yourself, work out why the washer won’t spray and the rear window or mirrors won’t heat, and what to do if the charging light comes on and the alternator belt is suspect.
9 min · 4 questionsfreeElectrical checklist: before a trip and before winter
What to check in your car’s electrical system before a long trip and before winter, and what kit to carry with you.
7 min · 4 questionsfree
From the lessons
Price
Free
All lessons are open for free — on the website and in the app, no sign-up.
Questions
How much does the course cost?
The course is free: all lessons are open on the website and in the app.
Do I need experience?
No. The lessons are written in plain language for people who drive — no electrical knowledge needed.
Do I get a certificate?
Yes, free and without a promo code. Finish all the lessons and the final test unlocks: 20 questions covering all lessons, and you need at least 16 correct answers for the certificate. The certificate of completion can be verified by its number. It is not a state-recognised diploma: this is a self-study course.
Does it work offline?
Yes: in the Android app, lessons open without the internet.
Do I need to sign up?
No. Lessons open straight away, and your progress is stored on your phone.
Share the course
Who teaches the course
Oleg is a working auto electrician in Almaty with 26 years in the trade, running the AVTOELEKTRIK-PRO.KZ service: auto electrics, computer diagnostics, immobilizers and keys, ECU repair. The lessons cover what he uses at work every day.