Remove/Install Active Brake Assist Electric Controller Unit - AR54.21-P-0700MFA
Model 118, 177, 247
with code 258 (Collision warning system with active brake application FCW-Stop)
except code 772 (AMG styling - Front spoiler, side skirts)
Fig 1: Active Brake Assist Electric Controller Unit Components Location - Model 177 With Code 258 Except Code 772
| Notice | Notes on preventing damage to electronic components due to a magnetic tool | AH54.00-P-0002-01A | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Remove/install | |||
| 1.1 | Remove front section of front fender liner. | Model 118, 177, 247 with code 258 (Collision warning system with active brake application FCW-Stop) except code 228 (Additional warm water heating) except code 772 (AMG styling - Front spoiler, side skirts) |
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| AR88.10-P-1301MFA | |||
| 1.2 | Remove front bumper and place down on suitable mat. | Model 118, 177, 247 with code 228 (Additional warm water heating) with code 258 (Collision warning system with active brake application FCW-Stop) except code 772 (AMG styling - Front spoiler, side skirts) |
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| AR88.20-P-2000MFA | |||
| 2 | Release and disconnect electrical connector from Active Brake Assist controller unit (A108) | ||
| 3 | Unhook Active Brake Assist controller unit (A108) from retaining tab and remove from bracket (1). | ||
| 4 | Install in the reverse order. | ||
| 5.1 | Commission Active Brake Assist controller unit (A108). | If the Active Brake Assist controller unit (A108) has been replaced. | |
| AD00.00-P-2000-06MFA | |||
| 5.2 | Perform calibration of Active Brake Assist controller unit (A108). | If Active Brake Assist controller unit (A108) is reused. | |
| AD00.00-P-2000-06MFA |