Fill Up And Vent The Active-Body-Control (ABC) System - AR32.50-P-0021SX

Model 216, 221.0/1, 231 

With Code 487 (Active Body Control (ABC)) 

Model 217 

With Code 487 (Active Body Control (ABC)) 

Model 222 

With Code 487 (Active Body Control (ABC)) 

Courtesy of MERCEDES-BENZ USA

Shown on model 221 

	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Risk of injury  to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning  from swallowing hydraulic fluid.	Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Notes on Active Body Control suspension	Model 216, 217, 221.0/1, 222, 231	AH32.50-P-0001-01N
	Filling
1	Insert dipstick (2a) all the way into ABC expansion reservoir (2), pull out again, read off hydraulic fluid level and correct if necessary	The funnel with filter must not be used for pouring in other operating fluids. Contamination can otherwise damage the ABC system. The funnel must be stored in a closed cabinet. Read off the hydraulic fluid level on the dipstick (2a) on the side with the inscription "ENGINE OFF UNLADEN". The fluid level must be between the "MIN" and "MAX" marks. The vehicle must be ready to drive and standing horizontally on its complete wheels.
		Filling capacity	*BF32.50-P-1001-01A
		Funnel	Fig 1
2	Pressurize ABC system manually	When replacing the tandem pump/hydraulic pump (1).
		Model 216, 231 with code 487 (Active Body Control (ABC)) Model 217 with code 487 (Active Body Control (ABC)) Model 221 with code 487 (Active Body Control (ABC)) except code Z07 (Top protection) Model 222 with code 487 (Active Body Control (ABC)) The vehicle must be ready to drive and standing horizontally on its complete wheels.	AR32.50-P-0022-01RK
		Pressure pump	Fig 3
		Adapter	Fig 2
3	Start engine	The hydraulic fluid level in the ABC expansion reservoir (2) must be observed throughout the entire process (2nd person required). It must not drop below the "MIN" mark. The tandem pump/hydraulic pump (1) will otherwise be damaged as a result of air being drawn in. When replacing the tandem pump/hydraulic pump (1), the engine must run for at least 2 min before the level adjustment push button switch is pressed.
4	Press level adjustment push button switch unit indicator lamp in push button switch goes out	Vehicle level "Normal level (NN)".
5	Insert dipstick (2a) all the way into ABC expansion reservoir (2), pull out again, read of hydraulic fluid level and correct if necessary	Read off the hydraulic fluid level on the dipstick (2a) on the side with the inscription "ENGINE ON UNLADEN". The fluid level must be between the "MIN" and "MAX" marks.
	Bleeding
6	Press level adjustment push button switch again until indicator lamp in push button switch lights up	Vehicle level "Raised level (EN)".
7	Press level adjustment push button switch again until indicator lamp in push button switch goes out	Vehicle level "Normal level (NN)". Steps 6 and 7 must be repeated 3 times. Following removal, installation or replacement of suspension struts or valve units, steps 6 and 7 should be repeated approx. 15 times.
8	Turn off engine
9	After approx. 10 min, pull dipstick (2a) out of ABC expansion reservoir (2) and wipe clean using a lint-free cloth	Always wait 10 min because the hydraulic fluid only flows back into the ABC expansion reservoir (2) slowly and otherwise the measurement value will be distorted.
10	Insert dipstick (2a) all the way into ABC expansion reservoir (2), pull out again, read off hydraulic fluid level and correct if necessary	Read off the hydraulic fluid level on the dipstick (2a) on the side with the inscription "ENGINE OFF UNLADEN". The fluid level must be between the "MIN" and "MAX" marks.
11	Check ABC system for leaks and proper function

Fig 1: Identifying Funnel (126 589 12 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Adapter (166 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Pressure Pump (124 589 24 21 00)

Courtesy of MERCEDES-BENZ USA