Preparing test without quiescent current retention unit - AR54.10-P-1030-02P

WARNING: This page is about a different car, the 2009 Mercedes-Benz CLK350 and 2008 Mercedes-Benz CLK350. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Electrical Connection Set (201 589 00 99 00)

Courtesy of MERCEDES-BENZ USA

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Number	Designation
WH58.30-Z-1001-09A	Multimeter

Slacken nut on negative battery terminal clip.
Do not disconnect the negative terminal clip!
Prepare multimeter (2) for the test using electrical connection set.
Connect positive test cable (+) to negative battery cable (1).
Switch on multimeter (measuring range in amperes).
Carefully pull up negative battery terminal clip and at the same time connect negative test cable (-) under terminal clip on negative terminal (3).

Fig 2: Connecting Test Cables
Courtesy of MERCEDES-BENZ USA

Do not break the circuit when pulling off the negative terminal clip otherwise any existing faults will be erased. Remove the negative terminal clip completely only after the multimeter test cable is firmly connected to the negative terminal.
Route multimeter (2) with measurement cable (6) out of the engine compartment (on models 203, 209).

Fig 3: Routing Measurement Cable
Courtesy of MERCEDES-BENZ USA