At a glance
Engine layout and access affect difficulty.
Access determines the time.
Follow exact electrical isolation steps.
General steps; verify the exact vehicle procedure.
- 01ConfirmConfirm fault and exact vehicle fit
- 02SafetyReview hazards and stop limits first
- 03BudgetFull range · 30 currencies in Budget · not a quote
- 04Repair10 steps · prepare, remove, install
- 05Verify6 post-repair checks
Jump to a guide section
A misfire code is evidence to test, not proof that the coil failed.
Safety
Ignition systems can produce high voltage. Work with the engine off and cool. Keep the key or transmitter away as appropriate, and follow the manufacturer’s battery and ignition-system precautions.
Stop if access requires high-voltage hybrid/EV work, fuel-system opening, damaged wiring repair beyond your training, or removal of components you cannot safely support and reinstall.
Tools and parts
Budget context
Source-backed repair estimate
U.S. national parts-and-labor estimate. Not a guaranteed per-coil or vehicle-specific price. Diagnosis, access, location, taxes, fees, and related repairs can change the total.
ECB rates compare currencies, not local service prices.
- 01USD band$238–$320 · per replacement estimate
- 02Compare30 currencies · ECB rates dated 2026-10-05
- CAD CA$335–CA$460
- EUR €210–€290
Show all 30 currency values
- USD $238–$320
- CAD CA$335–CA$460
- EUR €210–€290
- GBP £175–£245
- AUD A$340–A$460
- JPY ¥37,655–¥50,635
- CHF 195–270
- NZD NZ$425–NZ$575
- INR ₹22,915–₹30,820
- MXN MX$4,315–MX$5,810
- CZK 5,195–6,985
- DKK 1,585–2,135
- HUF 78,125–105,050
- PLN 930–1,255
- RON 1,130–1,525
- SEK 2,390–3,215
- ISK 29,100–39,130
- NOK 2,285–3,075
- TRY 11,695–15,735
- BRL R$1,185–R$1,600
- CNY CN¥1,595–CN¥2,150
- HKD HK$1,865–HK$2,515
- IDR 4,263,325–5,732,210
- ILS ₪725–₪980
- KRW ₩319,865–₩430,075
- MYR 970–1,310
- PHP ₱14,915–₱20,060
- SGD 300–410
- THB 8,015–10,785
- ZAR 3,955–5,320
- 03VerifyConfirm vehicle and work scope
- Source 1: Ignition Coil Replacement Cost EstimateSource date 2026-09-03 · Retrieved 2026-09-23
Planning range only. Not a quote.
Preparation
3 steps
Confirm the diagnosis and exact part application
Recheck which cylinder and component were proven faulty. Match the replacement to the VIN, engine, connector, and supersession information from a reliable catalog.
Review the service procedure before disassembly
Identify access components, battery precautions, fastener specifications, connector locks, boot/seal instructions, and any initialization or verification steps.
Let the engine cool and organize the work area
Clean loose debris around the coil and plug well so it does not enter the opening.
Removal
3 steps
Remove only the access components the procedure specifies
Track fasteners and hose or connector locations. Do not pull on wiring or brittle plastic.
Release the electrical connector correctly
Inspect the lock, terminals, seal, and nearby harness for damage or contamination.
Remove the coil fastener and coil
Pull in the direction the design allows, supporting the body rather than the wiring. Inspect the boot and plug well for oil, coolant, water, carbon tracking, or corrosion.
Installation
4 steps
Compare the old and replacement components
Confirm connector, mounting, boot length, seals, and application before installation.
Install any specified seal or boot treatment
Use only the product, amount, and location stated by the manufacturer. More is not better.
Seat the coil and tighten the fastener to the verified specification
Start fasteners by hand. Do not guess torque or use a value from a different engine.
Reconnect and reassemble
Confirm connector locks and harness routing. Reinstall access components according to their procedures and specifications.
Verification
6 checks
- Inspect for tools, loose hardware, and disconnected items
- Start the engine and observe the original symptom
- Check warning lights and scan data
- Recreate the original load and temperature conditions safely
- Confirm misfire counts do not return
- Recheck any disturbed area for fit and routing
Common mistakes
- Replacing the coil before diagnosisA misfire code is not a coil code.
- Ignoring plug-well contaminationThe condition that damaged or affected the coil may still be present.
- Forcing a connector or locking tabHeat-aged plastic and secondary locks need the correct release method.
- Guessing fastener torqueSmall fasteners and plastic covers are easy to damage.
Torque specifications
IAR intentionally does not publish a universal coil-fastener torque. The value and procedure can vary by fastener, engine, mounting material, and access component.