Engine cooling system - Checking, Correction of the coolant level Checking the anti-freeze and anticorrosion inhibitor - wh2010pkw0000x(2010)
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
Models 107 from 8/85, 123, 124, 129, 140 to 6/93, 126 from 9/85, 201 from 1/85
Engine cooling system Checking and correcting coolant level, checking antifreeze and corrosion inhibitor
The expansion tank or radiator cap should only be opened at coolant temperatures below 90 °C.
| Coolant level | check |
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NOTE:
Open expansion tank or radiator cap in increments.
In the event of coolant loss not resulting from normal operation: Obtain separate order, pressure-test cooling system, determine cause and eliminate. |
Vehicles with expansion tank When the coolant is cold, the coolant level should reach up to the mark "cold water level" on the expansion tank (arrow). If coolant is warm, it should be approx. 1 cm above this mark. |
| Vehicles without expansion tank Coolant level should reach up to specified markings (B or C). |
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| Antifreeze and corrosion inhibitor | check content in coolant, coolant composition and antifreeze table (see 2080). |
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NOTE:
Use only antifreeze/corrosion inhibitors approved by Mercedes-Benz (see Specifications for Service Products, sheet 310, 325.0).
These products ensure particularly effective corrosion protection for all light alloy parts in the cooling system and are mandatory for all passenger car engines. |
COMMERCIALLY AVAILABLE TOOLS AND TEST EQUIPMENT
| Designation | e.g. company, order no. |
|---|---|
| Antifreeze tester | SUN Elektrik Deutschland GmbH |
| Duo-Check 7182 | Auf dem Hulb 5 |
| D-4020 Mettmann | |
| No. 010357 | |
| Socket wrench, 7 mm, on flexible shaft for hose clamps with worm drive | Hazet D-5630 Remscheid No. 426-7 |