Ignition Coil — Audi Q7
Category: Engine | Severity: medium | Cost: ₹4,000–₹15,000
What is Ignition Coil?
Ignition coils convert battery voltage into high voltage required by spark plugs.
How Ignition Coil Works
It steps up low voltage to thousands of volts to create spark.
Why is Ignition Coil Important?
Ensures proper ignition timing and combustion.
Common Problems
- Coil failure
- Overheating
- Electrical faults
Symptoms
- Misfire
- Rough idle
- Power loss
Causes of Failure
- Heat stress
- Wear
- Voltage issues
Impact on Car Performance
Faulty coil leads to misfire and reduced engine efficiency.
DIY Fix Guide — Step by Step
- Scan ECU for misfire codes
- Inspect coil pack
- Swap coils to identify faulty one
- Replace defective coil
- Check wiring
Maintenance Tips
- Avoid water exposure
- Regular diagnostics
Replacement Cost in India
Estimated range: ₹4,000 – ₹15,000
Where to Buy Online
When to Replace Ignition Coil
Replace when misfire persists.