Alternator Replacement – Everything You Need to Know

The alternator is a crucial component that generates electricity to charge your car’s battery and power electrical systems. ClickMechanic offers mobile alternator replacement within 2-24 hours, depending on part availability. The service includes a new alternator, fitting, and a 12-month parts and labour warranty. If additional issues are found, a mechanic will provide a no-obligation quote for the correct repair.

What Does an Alternator Do? The alternator is a generator that provides electrical power to the vehicle while the engine is running. It ensures that the battery remains charged and supplies energy to the car’s lights, entertainment system, and other electrical functions.

How Does an Alternator Work?

• The alternator is driven by a belt connected to the engine crankshaft pulley.

• Inside, a rotating electromagnet generates alternating current (AC).

• A rectifier converts AC to direct current (DC) for battery charging.

• A regulator controls power output based on demand.

• The battery warning light on the dashboard helps monitor alternator function. If it stays on after starting, the alternator may be faulty.

Signs That an Alternator Needs Replacing:

• Battery warning light on the dashboard.

• Electrical components shutting down (e.g., lights, infotainment, ABS, ESP).

• Battery not charging properly after driving.

What Happens During an Alternator Replacement? A mechanic will:

1. Inspect the charging system to confirm alternator failure.

2. Check the alternator’s drive belt for wear or looseness.

3. Test the alternator’s voltage output at the battery terminals.

4. Disconnect the battery to safely replace the alternator.

5. Install the new alternator and update the vehicle’s electrical system if required.

6. Re-test the charging system and ensure proper function.

7. Re-enter the radio code (if required and available).

8. Check electric window function if affected.

9. Test drive the vehicle to verify performance.

What Does This Repair Cover? ✔ OEM-standard alternator (correct rating for your vehicle) ✔ Mobile fitting service (if applicable) ✔ VAT (if applicable) ✔ 12-month parts and labour warranty ✔ Alternator coding to vehicle’s electrical system (if required) ✔ Radio code input (if required and available) ✔ Electric window reset (if applicable) ✔ Charging system check post-installation

Important Notes:

• Old alternators must be returned to obtain a surcharge refund. If you wish to keep your old alternator, an additional charge may apply.

FAQs:

Can My Existing Alternator Be Repaired?

• While theoretically possible, it is usually more expensive due to parts availability and labour costs. ClickMechanic only offers replacement services.

Can a Second-Hand Alternator Be Fitted?

• No. ClickMechanic does not fit second-hand parts due to warranty and reliability concerns.

Is the Quote Final, or Could There Be Extra Charges?

• Some vehicles may require a different alternator rating based on factory-installed extras (e.g., heated seats, electric folding mirrors). If your vehicle requires a different alternator, we will discuss the options with you before proceeding.

Can I Supply My Own Parts?

• No, unless they are brand-new from a dealership with proof of purchase.

What If the Mechanic Finds a Different Issue?

• The mechanic will offer a no-obligation quote for the correct repair.

• If you decline the repair, the booking will be changed to a diagnostic call-out.

Associated Repairs Available on ClickMechanic:

• Battery Replacement (Vehicles with Stop/Start)

• Battery Replacement (Vehicles without Stop/Start)

• Starter Motor Replacement

• Battery Warning Light Inspection

• Battery Drain Investigation

How Much Does an Alternator Replacement Cost? Pricing depends on your vehicle and manufacturer specifications. Get a custom quote here: 🔗 Alternator Replacement Quote