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How to change ignition coil on AUDI A6 Saloon (4A2, C4) – replacement guide
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Important!
This replacement procedure can be used for:
AUDI A6 Saloon (4A2, C4) 2.0, AUDI A6 Saloon (4A2, C4) 2.0, AUDI A6 Saloon (4A2, C4) 2.0 16V, AUDI A6 Saloon (4A2, C4) 2.0 16V quattro, AUDI A6 Saloon (4A2, C4) 2.3, AUDI A6 Saloon (4A2, C4) 2.3 quattro … View more
The steps may slightly vary depending on the car design.
AUDI A6 Saloon (4A2, C4) 2.0, AUDI A6 Saloon (4A2, C4) 2.0, AUDI A6 Saloon (4A2, C4) 2.0 16V, AUDI A6 Saloon (4A2, C4) 2.0 16V quattro, AUDI A6 Saloon (4A2, C4) 2.3, AUDI A6 Saloon (4A2, C4) 2.3 quattro … 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 A6 Saloon (4A2, C4) and other AUDI models
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 A6 (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 A6 (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 3
Disconnect the secondary air pump hoses. - Step 4
Cover the secondary air pump channels with a microfibre cloth to prevent dust and dirt from getting inside. - Step 5
Detach the secondary air pump connector. - Step 6
Unscrew the fasteners connecting the secondary air pump to its bracket. Use a combination spanner #10. - Step 7
Remove the secondary air pump. - Step 8
Unscrew the fastener of the secondary air pump bracket. Use HEX No.H6. Use a drive socket #13. Use a ratchet wrench. - Step 9
Remove the secondary air pump bracket. - Step 10
Detach the connector from the ignition coil. - Step 11
Disconnect the spark plug wires from the ignition coil.Replacement: ignition coil – AUDI A6 (4A, C4). Tip:Remember the sequence of the spark plug wires connectors. - Step 12
Unscrew the ignition coil bracket. Use HEX No.H5. Use a ratchet wrench. - Step 13
Remove the ignition coil. - Step 14
Treat the ignition coil connector with electronic spray. The spray will protect the electrical contacts from corrosion, oxidation, and will reduce the contact resistance. - Step 15
Treat the spark plug wire connectors. Use electronic spray. - Step 16
Install the new ignition coil to the spark plug well. Make sure you hear a click indicating that it is locked in place. - Step 17
Tighten the ignition coil fastening. Use HEX No.H5. Use a torque wrench. Tighten it to 7 Nm torque.
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