Drain/fill low-temperature circuit coolant - AR09.41-P-6834CD
MODEL 172 with ENGINE 274
MODEL 172 with ENGINE 651
MODIFICATION NOTES
| 7.10.15 | Coolant specification altered | Operation step 5.2 |
Shown on model 172 with engine 274
| Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| Notes on coolant | AH20.00-N-2080-01A | ||
| Remove | |||
| 1 | Unscrew cap (1) on low-temperature circuit coolant expansion reservoir (2) | ||
| 2.1 | Remove bottom engine compartment paneling at front | Model 172 with engine 274 | |
| AR61.20-P-1105W | |||
| 2.2 | Remove soundproofing below | Model 172 with engine 651 | |
| AR94.30-P-5300W | |||
| Drain off | |||
| 3 | Disconnect coolant hose (3) and coolant | AR20.20-P-7441-01RQ | |
| Pour in | |||
| 4 | Mount coolant hose (3) at radiator | AR20.20-P-7441-01RQ | |
| 5.1 | Add coolant and bleed low-temperature circuit | Model 172 with engine 274 up to model year 2015 Model 172 with engine 651 |
|
| AR20.00-P-1142-04A | |||
| Anticorrosion/antifreeze agents (Sheet 325.0) | NOx reducing agent AUS 32 ("ADBlue") for SCR systems. See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
Do not mix together coolants with different specifications. Engine damage can occur otherwise. |
|||
| *BF20.00-P-1001-04A | |||
| Figure | |||
| Fig 5 | |||
| Fig 4 | |||
| Fig 3 | |||
| 5.2 | Add coolant and bleed low-temperature circuit | Model 172 with engine 274 as of model year 2016 |
|
| AR20.00-P-1142-04A | |||
| Anticorrosion agent/antifreeze (specification 325.6) | Anticorrosion agent/antifreeze (Specification 325.6). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
Do not mix together coolants with different specifications. Engine damage can occur otherwise. |
|||
| *BF20.00-P-1001-04A | |||
| Figure | |||
| Fig 5 | |||
| Fig 4 | |||
| Fig 3 | |||
| Check | |||
| 6 | Check low-temperature circuit for leaktightness | Model 172 with engine 651 | AR09.41-P-1010LW |
| Model 172 with engine 274 | AR09.41-P-1010CD | ||
| Install | |||
| 7.1 | Install bottom front engine compartment paneling | Model 172 with engine 274 | |
| AR61.20-P-1105W | |||
| 7.2 | Install lower front soundproofing | Model 172 with engine 651 | |
| AR94.30-P-5300W | |||
| 8 | Tighten down cap (1) on low-temperature circuit coolant expansion reservoir (2) |
COOLANT MIXING RATIO
| Number | Designation | ENGINE ALL | ||
|---|---|---|---|---|
| BF20.00-P-1001-04A | Coolant mixing ratio | Antifreeze/water | up to -37°C | 50/50 |
| Antifreeze/water | up to -45°C | 55/45 | ||
| Specification | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | |||