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

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

Do not disconnect the negative terminal clip!

1. Loosen the negative terminal clip (1) nut on the battery  .
2. Prepare multimeter for the test; use "electrical connection set" for this purpose.
3. Connect measurement cable, positive (+) to ground (battery) (W10).
4. Switch on multimeter (do not select measuring range in amp(s) too small. When the central locking system operates, a current of about 20 A  flows).
5. After fastening the measurement cable, negative (-) to negative terminal, disconnect the negative terminal clip (1).
   Fig 2: Identifying Negative Terminal Clip And Ground (Battery)

   
6. Carefully pull negative terminal clip (1) on the battery upwards and in the process simultaneously connect the measurement cable, negative (-) to the negative terminal under the negative terminal clip (1).

   Do not break the circuit when detaching 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 clipped to the negative terminal.

7. Take the multimeter (2) with measurement cable (6) out of the luggage compartment to the right.
8. Close trunk lid.

   The measurement cables (6) must not loosen in the process.

   Fig 3: Identifying Multimeter And Measurement Cables