17 00 039 Bleeding the high-temperature cooling system (B48)
WARNING: This page is about a different car, the 2018 BMW 330i and 2017 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Risk of scalding!
Open sealing cap only after engine has cooled down .
Open sealing cap only after engine has cooled down .
IMPORTANT:
Life-time coolant filling:
Never 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 drained and refilled.
In the case of other removal work involving the draining of part quantities of coolant, replace these quantities which have been drained with new coolant.
Follow NOTES for carrying out repair work on the cooling system!
Never 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 drained and refilled.
In the case of other removal work involving the draining of part quantities of coolant, replace these quantities which have been drained with new coolant.
Follow NOTES for carrying out repair work on the cooling system!
IMPORTANT:
The following bleeding procedure is necessary when a part is replaced in the cooling system or when the cooling system is refilled.
Filling without VACUUM FILLING DEVICE (watering can filling) is not released for this engine.
If ignored, then there is a risk of damage to engine!
Filling specification absolutely must be adhered to.
It is not permissible to operate the vehicle if the filling procedure has not been completely performed. This may lead to functional limitations (degradation) or overheating.
Filling without VACUUM FILLING DEVICE (watering can filling) is not released for this engine.
If ignored, then there is a risk of damage to engine!
Filling specification absolutely must be adhered to.
It is not permissible to operate the vehicle if the filling procedure has not been completely performed. This may lead to functional limitations (degradation) or overheating.
Necessary preliminary tasks:
- Before filling the high-temperature circuit, the low-temperature circuit must be filled/bled and functional.
- Fill HIGH-TEMPERATURE COOLING SYSTEM with vacuum filler device.
Overview graphic of bleeding routine for high-temperature cooling system.
Bleeding the high-temperature cooling system:
- Remove vacuum filler device on coolant expansion tank for high temperature.
- Open bleeder screw on coolant expansion tank for high temperature and shut again after approx. 10 seconds.
- Adjust the coolant level in the coolant expansion tank for high temperature to maximum.
- Shut the sealing cap on the coolant expansion tank for high temperature.
- Connect battery charger.
Starting the high-temperature cooling system bleeding routine:
- Switch the ignition on.
- Secure vehicle against rolling away/driving off (apply parking brake and put in P in automatics).
- Switch on low-beam headlights and hazard warning lights.
- Check that driving experience switch is not set to ECO-PRO.
- Set heating to maximum temperature and turn blower to lowest speed.
- Press accelerator pedal for 10 seconds to floor.
- Cooling system bleeding routine starts
- Then start engine.
- Increased idle speed of 1200 rpm is set.
- After 1 minute, increased idle position (1200 rpm)
- Press on accelerator up to about 3000 rpm for 10 seconds.
- Idle for 10 seconds.
- Press on accelerator up to about 3000 rpm for 10 seconds.
- Idle for 10 seconds.
- Press on accelerator up to about 3000 rpm for 10 seconds.
- Idle for 10 seconds.
- Press on accelerator up to about 3000 rpm for 10 seconds.
- Idle position for 10 seconds.
- Press on accelerator up to about 3000 rpm for 10 seconds.
- The high-temperature cooling system bleeding routine has finished approximately 11 minutes after having started the engine.
- Engine speed drops to idle speed level.
- Switch off engine.
- Allow the engine to cool down.
- Adjust the filling level in the high temperature coolant expansion tank to maximum.
- Close the sealing cap of the coolant expansion tank for high temperature until it lines up with the arrows.