Remove/install electronic stability program (ESP) hydraulic unit - AR42.45-P-0817MCU
MODEL 451.3/4
| Remove/install | |||
| Risk of death when touching components on vehicles with high-voltage on-board electrical system | Do not touch components and open lines of the high-voltage on-board electrical system. Persons with electronic implants (e.g. cardiac pacemakers) must never work on high-voltage on-board electrical systems. | AS54.00-Z-0001-02MEV | |
| Risk of poisoning caused by swallowing brake fluid. Risk of injury caused by brake fluid coming into contact with skin and eyes. | Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid. | AS42.50-Z-0001-01A | |
| Note on high-voltage battery | Model 451.391/491 | AH54.10-P-0006-01MEV | |
| Note on high-voltage system | Model 451.391/491 | AH54.00-P-0011-01MEV | |
| Brake fluid notes | AH42.50-P-0001-01A | ||
| Notes on repairs to brake system | AH42.00-P-0003-01A | ||
| 1 | Remove vehicle key and on-board electrical system plug | Model 451.391/491 | |
| 2 | Carry out enable of high-voltage system | Model 451.391/491 |
AR54.10-P-1160MEV |
| 3 | Remove maintenance flap | ||
| 4 | Unscrew cap of brake fluid expansion reservoir and extract brake fluid | ||
| Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. | AS00.00-Z-0010-01A | |
| 5 | Raise vehicle using the vehicle lift and remove underfloor paneling | Rechargeable drill / screwdriver gotis://G_58.0_01.1 |
|
| 6 | Remove diagonal struts | On model 451.431 | AR61.10-P-5138MCU |
| 7 | Remove high-voltage battery | Model 451.391/491 | AR54.10-P-1140MEV |
| 8 | Remove bulkhead wall | On model 451.431 | AR61.25-P-6600MCU |
| 9 | Unscrew plastic nut (2) and remove folding clamp (3) from screw bolt | ||
| 10 | Unclip brake lines (4, 5) from the bracket (6) | ||
| 11 | Unclip brake line (7) from the bracket (8) | ||
| 12 | Loosen nuts (9), unscrew bolts (10) and remove bracket (11) | ||
| *BA42.45-P-1008-01F | |||
| 13 | Support hydraulic unit (1) using transmission jack and removal fixture | Transmission jack gotis://H_00.10_01.0 |
*450589026200 |
| 14 | Check bolted connections of brake lines (13) with the hydraulic unit (1) for color coding | AR42.10-P-0013-05MCC | |
| 15 | Loosen bolted connections of brake lines (13) with the hydraulic unit (1) and separate | ||
If a brake line (13) with red marking has been released, this brake line (13) must be replaced. Refer to: ↓ |
*BA42.10-P-1010-04E | ||
| Remove/install brake line from the master brake cylinder to the ESP hydraulic unit | AR42.10-P-0034MCU | ||
| 16 | Carefully lower the hydraulic unit (1) until the brake lines (4, 5, 7, 14) are accessible | ||
| 17 | Check the bolted connections of the brake lines (4, 5, 7, 14) with the hydraulic unit (1) for color coding | AR42.10-P-0013-05MCC | |
| 18 | Loosen bolted connections of brake lines (4, 5, 7, 14) with the hydraulic unit (1) and separate | ||
| *BA42.10-P-1010-04E | |||
| *451589000300 | |||
| 19 | Unlock and separate electrical connector (15) on ESP control unit (N47-5) | ||
| 20 | Remove hydraulic unit (1) | ||
| 21 | Replace brake line (4, 5, 7, 14) | Only if a brake line (4, 5, 7, 14) with red color coding has been released. | |
| Remove/install left front brake line | AR42.10-P-0032MCU | ||
| Remove/install right front brake line | AR42.10-P-0033MCU | ||
| Remove/install brake line from the ESP hydraulic unit to the rear axle | AR42.10-P-0035MCU | ||
| 22 | Install in the reverse order | ||
| 23 | Bleed brake system | AR42.10-P-0010MCU | |
| 24 | Carry out transposition test | ||
| Connect STAR DIAGNOSIS and read out fault memory | AD00.00-P-2000-04MCC |
BRAKE LINES, BRAKE HOSES
| Number | Designation | Model 451.3/4 | |
|---|---|---|---|
| BA42.10-P-1010-04E | Brake line to ESP hydraulic unit | Nm | 16 |
ELECTRONIC STABILITY PROGRAM (ESP)
| Number | Designation | Model 451.3/4 | |
|---|---|---|---|
| BA42.45-P-1008-01F | Bolt, ESP hydraulic unit bracket to floor panel | Nm | 25 |