How to carry out replacement: Ignition Leads 230 CE 2.3 (123.243) MERCEDES-BENZ COUPE (C123)
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Change MERCEDES-BENZ COUPE (C123) 280 CE 2.8 Ignition Leads yourself – manuals and video tutorials

How to change ignition leads on MERCEDES-BENZ W123 Coupe (C123) – replacement guide

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Download your free tutorial and fix MERCEDES-BENZ W123 Coupe (C123) 230 CE 2.3 (123.243) problems yourself Download for free 1.38 MB Ignition Leads for MERCEDES-BENZ COUPE (C123) Shop now
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When to replace the Ignition Leads on your MERCEDES-BENZ Baureihe 123
Recommended replacement interval for the part category Ignition Cable Kit : 60000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ W123 Coupe (C123) 230 CE (123.243) … 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 Leads for W123 Coupe (C123) and other MERCEDES-BENZ models
Alternative products
How to change Ignition Cable Kit on MERCEDES-BENZ COUPE (C123) 230 CE 2.3 (123.243) – step-by-step instructions for straightforward car repair Ignition Cable Kit
Tools
Replacement: ignition leads – MERCEDES-BENZ COUPE (C123). Tools you might need:
Wire brush
High-temperature anti-seize lubricant
Dielectric grease
Torque wrench
Combination spanner #10
Drive socket # 10
Spark plug socket # 16
Ratchet wrench
Phillips screwdriver
Crow bar
Fender cover
Buy tools
Replacement: ignition leads – MERCEDES-BENZ COUPE (C123). AUTODOC recommends:
  • Warning! Shut down the engine before starting any work – MERCEDES-BENZ COUPE (C123).
Carry out replacement in the following order:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    How to change Ignition Leads on MERCEDES-BENZ COUPE (C123) 1977 - free PDF and video manuals
    Disconnect the earth cable terminal from the battery. Use a combination spanner #10.
  2. Step 4
    How to replace MERCEDES-BENZ W123 Coupe (C123) 230 CE 2.3 (123.243) 1978 Ignition Leads - step-by-step manuals and video guides
    Unscrew the inlet pipe fasteners. Use a Phillips screwdriver. Use a drive socket #10. Use a ratchet wrench.
  3. Step 5
    MERCEDES-BENZ COUPE (C123) 280 CE 2.8 1979 Ignition Leads replacement: free workshop manuals
    Remove the fastening bolts.
  4. Step 6
    Changing Ignition Leads on MERCEDES-BENZ W123 Coupe (C123) 280 C 2.8 (123.050) 1980 by yourself
    Remove the inlet pipe.
  5. Step 7
    How to remove MERCEDES-BENZ Baureihe 123 300 C 3.0 Turbo Diesel (123.153) 1981 Ignition Leads - online easy-to-follow instructions
    Remove the high tension cable bracket.
  6. Step 8
    How to replace Ignition Leads on MERCEDES-BENZ W123 Coupe (C123) 1982: download PDF manuals and video instructions
    Make marks to indicate the order of installation of the spark plug wires.
  7. Step 9
    How hard is it to do yourself: Ignition Leads replacement on MERCEDES-BENZ COUPE (C123) 300 CD (123.153) 1983 - download illustrated guide
    Disconnect the spark plug wires from the spark plugs.
  8. Step 10
    Need to know how to renew Ignition Leads on MERCEDES-BENZ Baureihe 123 1984? This free workshop manual will help you to do it yourself
    Disconnect the high tension cables from the ignition distributor.
  9. Step 11
    Changing of Ignition Leads on MERCEDES-BENZ COUPE (C123) 1985 won't be an issue if you follow this illustrated step-by-step guide
    Remove the high tension cables.
  10. Step 12
    MERCEDES-BENZ Baureihe 123 280 CE 2.8 Ignition Leads replacement: online guides and video tutorials
    Treat the ignition distributor terminals. Use a wire brush. Use dielectric grease.
  11. Step 13
    Fit new high tension cables.
    Step 14
    Replacing Ignition Leads on MERCEDES-BENZ COUPE (C123) 1978 230 CE 2.3 (123.243) by yourself
    Connect the high tension cables to the ignition distributor.
    Replacement: ignition leads – MERCEDES-BENZ COUPE (C123). Tip from AUTODOC experts:
    Follow the installation sequence.
  12. Step 15
    W123 Coupe (C123) 300 C 3.0 Turbo Diesel (123.153) 1979 Ignition Leads DIY replacement workshop manual
    Remove the ignition coil cover.
  13. Step 16
    How to change Ignition Leads on MERCEDES-BENZ W123 Coupe (C123) 1980 - tips and tricks
    Disconnect the high tension cable from the ignition coil.
  14. Step 17
    Step-by-step recommendations for DIY replacement MERCEDES-BENZ COUPE (C123) 1981 300 C 3.0 Turbo Diesel (123.153) Ignition Leads
    Remove the high tension cable from the ignition coil cover. Use a crowbar.
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