Engine Cooling System (Coupe): Diagnosis Smart Fortwo II

Inspect cooling system for leaks - AR20.00-P-1010MCU

ENGINE 132.910 in MODEL 451.3 /4

Scheme 14

Checking Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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 1 Remove maintenance flap (3) 2 Turn cooling system cap (1) on the engine radiator (2) a half turn counterclockwise, relieve the pressure and then unscrew the cooling system cap (1) 3 Check coolant level in expansion reservoir (2), correct if necessary. The engine coolant level in the coolant expansion reservoir (2) must be positioned at the max. marking. Coolant specifications Sheet 310.1 BB00.40-P-0310-01A Anticorrosion/antifreeze agents (Sheet 325.0) Sheet 325.0 BB00.40-P-0325-00A 4 Attach pressure pump on expansion reservoir (2) see scheme 5 5 Apply a pressure of a max. of 1.6 bar to the cooling system Observe pressure gauge for pressure pump. see scheme 5 6 Remove interior flap above engine If a pressure drop was established in the cooling system. AR88.40-P-1100-03MCC Risk of death caused by vehicle slipping or toppling off the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A 7 Raise vehicle using the vehicle lift and remove underfloor paneling If a pressure drop was established in the cooling system. Rechargeable drill / screwdriver 8 Check all components of cooling system for leaks; establish coolant loss and remove it If a pressure drop was established in the cooling system. 9 Lower vehicle with lifting platform 10 Disconnect pressure pump on expansion reservoir (2) and check coolant level in expansion reservoir (2); correct if necessary After removing the leakage in the cooling system. The engine coolant level in the coolant expansion reservoir (2) must be positioned at the max. marking. see scheme 5 Coolant specifications Sheet 310.1 BB00.40-P-0310-01A Anticorrosion/antifreeze agents (Sheet 325.0) Sheet 325.0 BB00.40-P-0325-00A 11 Attach pressure pump to expansion reservoir (2) and apply a pressure to the cooling system again of a maximum of 1.6 bar After removing the leakage in the cooling system. Observe pressure gauge for pressure pump. see scheme 5 12 Raise vehicle with vehicle lift 13 Install underfloor paneling After removing the leakage in the cooling system. 14 Lower vehicle with lifting platform 15 Install interior flap above engine After removing the leakage in the cooling system. AR88.40-P-1100-03MCC 16 Detach pressure pump on expansion reservoir (2) see scheme 5 17 Seal expansion reservoir (2) with cap (1) 18 Install maintenance flap (3)

Scheme 15

Testing and repair work: Smart: Engine cooling system - AR20.00-Z-9132CB

ENGINE 132

Testing and repair work: Smart: Engine cooling system - AR20.00-Z-9451CA

MODEL 451

Test values for cooling system cap - BE20.30-P-1000-01A

All engines

CAP OF RADIATOR OR EXPANSION RESERVOIR

CAP FOR RADIATOR OR EXPANSION RESERVOIR

CAP FOR RADIATOR OR EXPANSION RESERVOIR