Removing ignition coil of cylinder bank 2
Prerequisite
- Ignition is switched off.
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
WARNING:
Hot fluids.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
CAUTION:
Materials harmful to health.
Contact with fluids harmful to health!
Contact with fluids harmful to health!
- Note and follow safety instructions on containers.
- Conduct all work in appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Immobilization period-long fill of coolant!
Do not reuse used coolant.
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be emptied and refilled.
In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.
Immobilization period-long fill of coolant!
Do not reuse used coolant.
When replacing and removing components which rely on the corrosion protection effect of the coolant, it is essential to change the coolant. The cooling system must therefore be emptied and refilled.
In the case of other removal work involving the draining of part quantities of coolant, the coolant level must be topped up with new coolant.
NOTE:
TECHNICAL INFORMATION
Notes on work at the cooling system form the basis of these repair instructions and must be complied with at all times.
For additional information see: INSTRUCTIONS FOR REPAIR WORK ON COOLING SYSTEM .
Notes on work at the cooling system form the basis of these repair instructions and must be complied with at all times.
For additional information see: INSTRUCTIONS FOR REPAIR WORK ON COOLING SYSTEM .
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING THE COVER OF THE RIGHT DME CONTROL UNIT .
- Refer to REMOVING THE CONTROL UNIT BRACKET FOR CYLINDERS 1 TO 4 .
- Refer to REMOVING THE COVER PANEL OF THE LEFT DME CONTROL UNIT .
- Refer to REMOVING TOP CLEAN AIR PIPE .
- Refer to REMOVING THE CONTROL UNIT BRACKET FOR CYLINDERS 5 TO 8 .
- Refer to PARTIAL REMOVAL OF COOLANT EXPANSION TANK .
Prerequisite
Ignition is switched off.
NOTE:
RISK OF DAMAGE
Damage to the ignition coil.
The silicone hose of the ignition coil must not be contaminated by fuel as this can lead to failure of the ignition coil.
Damage to the ignition coil.
The silicone hose of the ignition coil must not be contaminated by fuel as this can lead to failure of the ignition coil.
- When working on the fuel system, cover the ignition coils with suitable materials and remove where required.
- Do not oil or grease the silicone tube of the spark plug socket. Do not use any protection or maintenance products (e.g. silicone spray, rubber care products, rust remover, etc.).
→ Removing the cover panel of the left DME control unit
- Remove the cover (1) and pull it up.
→ Remove top clean air pipe
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
- Loosen clamps (1).
- Feed out top (2) clean air pipe and remove.
→ Removing the control unit bracket for cylinders 5 to 8
NOTE:
RISK OF DAMAGE
Electrostatic discharge.
Damage to or destruction of electrical components.
Electrostatic discharge.
Damage to or destruction of electrical components.
- Leave the electrical components in their original packaging until they are being installed. Only use the original packaging for returning the product. Always package removed components straight away.
- Read and comply with user information on using the associated special tool 12 7 060.
- Only tap the housings of electrical components. Do not tap pins or multi-pin connectors directly.
- Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
- For additional information see: NOTES ON ESD (ELECTROSTATIC DISCHARGE) PROTECTION .
NOTE:
TECHNICAL INFORMATION
Follow instructions for removing and installing control units.
For additional information see: 1200... INSTRUCTIONS FOR REMOVAL AND REPLACEMENT OF CONTROL UNITS .
Follow instructions for removing and installing control units.
For additional information see: 1200... INSTRUCTIONS FOR REMOVAL AND REPLACEMENT OF CONTROL UNITS .
NOTE:
TECHNICAL INFORMATION
Disconnecting control units may cause fault code entries and functional limitations. Fault code entries must be read out and deleted if necessary.
Disconnecting control units may cause fault code entries and functional limitations. Fault code entries must be read out and deleted if necessary.
- Unlock and disconnect all plug connections (1).
- Disconnect all clamps (2).
- Loosen screws (1).
- Guide out and remove control unit bracket (2) with the DME control unit upwards out of holder (3).
- Use commercially available disconnection tools to pinch off the coolant lines.
- Use commercially available syringe (1) or suitable tool to draw off coolant expansion tank.
- Loosen sealing cap (1).
- Draw off coolant using standard pump from the coolant expansion tank (2) and dispose of it.
- Disconnect the coolant hose (3) from the coolant expansion tank (2).
- Unlock and loosen holder (4).
NOTE:
TECHNICAL INFORMATION
Only flexible hose pipes may be disconnected.
Only flexible hose pipes may be disconnected.
- Disconnect the coolant hoses (1) with standard disconnection tools (arrows).
- Unlock and release coolant line (1).
- Catch and dispose of escaping coolant.
- Unlock plug connection (2) and disconnect.
- Disconnect clamp (3).
- Equipment specification with gasoline particulate filter:
Feed the cable (1) out of the brackets toward the front.
Remove the rear bonnet seal (2) from the guide toward the inside.
- Equipment specification with gasoline particulate filter:
- Loosen screws (1).
- Carefully slide the coolant expansion tank (2) upwards and to the front.
- Equipment specification with gasoline particulate filter:
Release the screws (1) several thread starts.
Lift the holder of the GPF (2) upward and out of the guide.
- Thread out coolant expansion tank (2) and remove.
- Loosen screws (1).
- Thread out coolant expansion tank (2) and remove.
NOTE:
RISK OF DAMAGE
Injectors contaminated with coolant.
Damage to and failure of injectors that were coated with coolant for an extended period.
Injectors contaminated with coolant.
Damage to and failure of injectors that were coated with coolant for an extended period.
- Covering injectors with suitable auxiliary materials before testing or topping up the coolant is mandatory.
- Covering injectors with suitable auxiliary materials before working on the cooling system in the area of the injectors is mandatory.
- If necessary, draw off all of the coolant from the coolant expansion tank.
- Always clean injectors or injector shafts contaminated with coolant (e.g. with compressed air).
CAUTION:
Swirling dirt particles caused by compressed air.
Injury hazard!
Injury hazard!
- Collect dirt particles, e.g. when blowing out, use cloth to do so.
- Wear safety goggles.
CAUTION:
Materials harmful to health.
Contact with fluids harmful to health!
Contact with fluids harmful to health!
- Note and follow safety instructions on containers.
- Conduct all work in appropriate personal protective equipment only.
- Check the injector shafts for coolant residues (1).
- If there are coolant residues (1) in the injector shaft: Clean the injector shafts with an air gun (2).
- Loosen clamps (1).
- Thread cable (2) out of holders (arrows) and place to one side.
- Unlock the connectors (arrows) and disconnect.
- Loosen nut (1).
- Loosen screw (2).
- Remove the cable clip (3) and put to one side.
- Loosen screw (1).
- Slowly pull the ignition coil (2) up and take out without jerking it.
Pulling out the ignition coil with jerks may cause silicone hose to tear.
