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| Check the value in display field 2 (7th digit from the left). |
| Target value: x x x x x x 1 x |
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| Depress the brake pedal and watch the value in display field 2 (7th digit from the left). |
| Target value: x x x x x x 0 x |
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| Adjust the brake light switch if necessary, such that the target value is met. |
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| Press 0 and 6 for the function “End data transmission” and press Q to confirm the entry. |
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| Switch off the ignition. |
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Read measurement value block 66 -> | 1 2 |
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