Drain/pour in coolant - AR20.00-P-1142MEV
MODEL 451.391/491 with ENGINE 780.009 Coolant circuit high-voltage battery
Fig 1: Identifying Cap, Hose Connector, High-Voltage Battery, Expansion Reservoir, Coolant Hoses And Hose Clamps
| Risk of death when touching components on vehicles with high-voltage on-board electrical system | Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not carry out any work on high-voltage on-board electrical systems. | AS54.00-Z-0001-01A | |
| 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 | |
| Note on high-voltage battery | AH54.10-P-0006-01MEV | ||
| Note on high-voltage on-board electrical system | AH54.00-P-0010-01A | ||
| Notes on coolant | AH20.00-N-2080-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Evaluation of high-voltage components | AH54.00-P-6500-01SXH | ||
| Drain off | |||
| 1 | Detach key and battery charger power supply plug | ||
| 2 | Remove maintenance flap | ||
| 3 | Turn cap (1) on expansion reservoir (2) half a revolution counterclockwise, relieve overpressure and then unscrew cap (1) | ||
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 4 | Raise vehicle with vehicle lift | ||
| 5 | Remove underfloor paneling | ||
| 6 | Open hose clamps (6) and push back onto the coolant hoses (5) | Figure | |
| 7 | Detach coolant hoses (5) at the hose connectors (4) | For further work close off the hose connectors (4) using suitable stop plugs. |
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| Pour in | |||
| 8 | Attach coolant hoses (5) at the hose connectors (4) | ||
| 9 | Position and attach hose clamps (6) at the coolant hoses (5) | ||
| 10 | Lower vehicle with vehicle lift | ||
| 11 | Bleed cooling system via expansion reservoir (2) | AR20.00-P-1142-06MCD | |
| Coolant specifications | Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| Anticorrosion/antifreeze agents (Sheet 325.0) | Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1 | ||
| Figure | |||
| Figure | |||
| 12 | Check cooling system for leaktightness | Model 451.391/491 with engine 780.009 coolant circuit high-voltage battery | AR20.00-P-1010MEW |