1 | Cover |
2 | Expansion reservoir |
3 | Adhesive label |
N33/9 | PTC heater booster |
S83.70-4609-06
Due to recent events we would like to inform you that the cover (1) of the PTC heater booster (N33/9) must not be opened. The filling of the cooling system (low-temperature cooling circuit) via the expansion reservoir (2) may only be performed by qualified employees (minimum qualification for this is participation in a special high-voltage awareness raising training course) (see AR20.00-S-1140EV).
If the adhesive label (3) is not present, this must be retrofitted.
Pour in coolant | |||
Danger | Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | |
Warning | Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. 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. | |
Topical note | General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system | ||
Topical note | Notes on coolant | ||
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
1 | Drain coolant, fill up and check cooling system for leaks | Model 639.603/703 with engine 780.994 | |
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