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How to change ignition coil on AUDI 100 C4 Avant (4A5) – replacement guide
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Important!
This replacement procedure can be used for:
AUDI 100 Avant (4A5, C4) 2.0 E 16V, AUDI 100 Avant (4A5, C4) 2.0 E … View more
The steps may slightly vary depending on the car design.
AUDI 100 Avant (4A5, C4) 2.0 E 16V, AUDI 100 Avant (4A5, C4) 2.0 E … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Ignition Coil for 100 Avant (4A5, C4) and other AUDI models
Ignition coil
Alternative products

Electronic spray
Torque wrench
Combination spanner #10
Drive socket # 13
HEX bit No.H5
HEX bit No.H6
Ratchet wrench
Microfibre towel
Fender cover
Replacement: ignition coil – AUDI 100 Avant (4A, C4). Tip from AUTODOC experts:
- The replacement procedure is the same for the ignition coils of all cylinders.
- All work should be done with the engine stopped.
Replacement: ignition coil – AUDI 100 Avant (4A, C4). Recommended sequence of steps:
- Step 1Open the bonnet.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Disconnect the secondary air pump hoses.
- Step 4Cover the secondary air pump channels with a microfibre cloth to prevent dust and dirt from getting inside.
- Step 5Detach the secondary air pump connector.
- Step 6Unscrew the fasteners connecting the secondary air pump to its bracket. Use a combination spanner #10.
- Step 7Remove the secondary air pump.
- Step 8Unscrew the fastener of the secondary air pump bracket. Use HEX No.H6. Use a drive socket #13. Use a ratchet wrench.
- Step 9Remove the secondary air pump bracket.
- Step 10Detach the connector from the ignition coil.
- Step 11Disconnect the spark plug wires from the ignition coil.Replacement: ignition coil – AUDI 100 Avant (4A, C4). Tip:Remember the sequence of the spark plug wires connectors.
- Step 12Unscrew the ignition coil bracket. Use HEX No.H5. Use a ratchet wrench.
- Step 13Remove the ignition coil.
- Step 14Treat the ignition coil connector with electronic spray. The spray will protect the electrical contacts from corrosion, oxidation, and will reduce the contact resistance.
- Step 15Treat the spark plug wire connectors. Use electronic spray.
- Step 16Install the new ignition coil to the spark plug well. Make sure you hear a click indicating that it is locked in place.
- Step 17Tighten the ignition coil fastening. Use HEX No.H5. Use a torque wrench. Tighten it to 7 Nm torque.
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