Remove/Install Front Midrange Radar Sensor - AR54.21-P-0707FR
Model 257
as of model year 2021
with code 258 (Collision warning system with active brake application FCW-Stop)
Model 290
as of model year 2021
with code 258 (Collision warning system with active brake application FCW-Stop)
Shown on model 257 except for code M016 (Performance-enhanced engine)
Shown on model 257 with code M016 (Performance-enhanced engine)
Shown on model 290 on model year 2021
| 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 | Remove Mercedes star. | AR88.40-P-4053FR | |
| 2 | Remove screw (1). | Model 257 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) |
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| 3 | Remove Active Brake Assist controller unit (A108) from holder (2). | Model 257 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) with code M016 (Uprated engine) Model 290 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) |
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Do not crush or kink or subject electric lines to tension. This will result in damage to the electric lines and can impair their function. |
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| 4.1 | Remove holder (2) and remove Active Brake Assist controller unit (A108). | Model 257 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) except code M016 (Uprated engine) |
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| 4.2 | Release and disconnect electrical connector (3) and remove Active Brake Assist controller unit (A108). | Model 257 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) with code M016 (Uprated engine) Model 290 as of model year 2021 with code 258 (Collision warning system with active brake application FCW-Stop) |
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| 5 | Install in the reverse order. | ||
| 6 | Commission Active Brake Assist controller unit (A108). | When replacing Active Brake Assist controller unit (A108). | |
| AD00.00-P-2000-06FR | |||
| 7 | Calibrate Active Brake Assist controller unit (A108). | When reusing Active Brake Assist controller unit (A108). | |
| AD00.00-P-2000-06FR |