How to change ignition coil on MERCEDES-BENZ S-Class Saloon (W126) – replacement guide
MERCEDES-BENZ S-Class Saloon (W126) 300 SE, SEL (126.024, 126.025), MERCEDES-BENZ S-Class Saloon (W126) 300 SE, SEL (126.024, 126.025), MERCEDES-BENZ S-Class Saloon (W126) 260 SE (126.020), MERCEDES-BENZ S-Class Saloon (W126) 260 SE (126.020) … 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

- Warning! Shut down the engine before starting any work – MERCEDES-BENZ S-CLASS (W126).
- Step 1
Open the bonnet.
Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
Step 3
Disconnect the earth cable terminal from the battery. Use a combination spanner #10.
- Step 4

Unscrew the inlet pipe fasteners. Use a Phillips screwdriver. Use a drive socket #10. Use a ratchet wrench.
- Step 5

Remove the fastening bolts.
- Step 6

Remove the inlet pipe.
- Step 7

Remove the ignition coil cover.
- Step 8

Disconnect the high tension cable from the ignition coil.
- Step 9

Unscrew the fasteners of the ignition coil terminals. Use a drive socket #10. Use a ratchet wrench.
- Step 10

Disconnect the terminals from the ignition coil.
- Step 11

Unscrew the ignition coil fasteners. Use a combination spanner #10.
- Step 12

Remove the ignition coil.
- Step 13

Install a new ignition coil.
- Step 14

Screw in the ignition coil fasteners. Use a combination spanner #10.
- Step 15

Connect the terminals to the ignition coil.
- Step 16

Treat the ignition coil terminals. Use dielectric grease.
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