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Home >> BMW >> 2009 >> X5 35d >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Cooling System - Repair (N52, N62)) >> 00 Coolant Checking Cooler Line >> 17 00 008 Draining and adding coolant in radiator (N62TU, N63)

17 00 008 Draining and adding coolant in radiator (N62TU, N63)

WARNING: This page is about a different variant/trim than selected.

Special tools required: 

WARNING: Risk of scalding! This repair work on the cooling system should only be carried out on an engine that has cooled down!
IMPORTANT: Lifetime 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 partial quantities of coolant, replace these quantities which have been drained with new coolant.

Installation note:

Use only recommended coolant. See COOLING SYSTEM - OPERATING FLUIDS .

Observe 50/50 mixture ratio.

Protective measures/rules of conduct: 

IMPORTANT: For dirt contamination of the cooling system (e.g. by engine oil), the cooling system must be rinsed with water until all dirt contamination is removed!
IMPORTANT: Risk of skidding due to coolant on the floor. Danger of injury! Catch and dispose of drained coolant in drip tray (1) and if necessary special tool 00 2 030 (universal hydraulic lifting equipment).
Fig 1: Catch And Dispose Of Drained Coolant In Drip Tray (1)
G00497373Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary work: 

Draining coolant: Open sealing cap (1) on coolant expansion tank (2). Installation note: Close sealing cap (1) until the arrow marks line up.

Fig 2: Close Sealing Cap (1) Until The Arrow Marks Line Up
G00497374Courtesy of BMW OF NORTH AMERICA, INC.

If present, release coolant drain connector (1) on the radiator. For radiators without coolant drain connector, unlock coolant hose and remove. Drain, catch and dispose of coolant.

Fig 3: Release Coolant Drain Connector (1) On The Radiator
G00497375Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: Replace sealing ring. Tightening torque, see 17 11 2AZ in 17 11 RADIATOR AND MOUNTING PARTS .

NOTE: Adding coolant: Use only recommended coolant. See COOLING SYSTEM - OPERATING FLUIDS . Observe 50/50 mixture ratio.

Observe bleeding instructions without fail. Fill and vent cooling system  Check cooling system for watertightness.