Remove/Install DC/DC Converter - AR54.10-P-1350GQA
MODEL 166.063
| Risk of death when touching components on vehicles with high-voltage on-board electrical system | Do not touch damaged or defective components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers) must not carry out any work on high-voltage on-board electrical systems. | AS54.00-Z-0001-01A | |
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Note on high-voltage battery | AH54.10-P-0006-01MEV | ||
| Note on high-voltage on-board electrical system | AH54.00-P-0010-01A | ||
| Evaluation of high-voltage components | AH54.00-P-6500-01SXH | ||
| Power disable | |||
| 1 | Connect diagnostic system and save basic data from DC/DC converter control unit (2) | Only when replacing the DC/DC converter control unit (2). | |
| AD00.00-P-2000-04A | |||
| 2 | Perform disable for the high-voltage on-board electrical system | AR54.10-P-1150GQA | |
| Remove/install | |||
| 3 | Remove load compartment floor | AR68.80-P-5800GQA | |
| 4 | Disconnect battery ground line | AR54.10-P-0003GZ | |
| 5 | Unscrew nut (7) and remove both 12V positive lines | ||
| *BA54.10-P-1012-02G | |||
| 6 | Unscrew bolt (1) of ground line and remove ground line | *BA54.10-P-1013-02G | |
| 7 | Clamp off coolant hoses (5) close to DC/DC converter (2) | ||
| Fig 1 | |||
| 8 | Unlock coolant hoses (5) at DC/DC converter (2) | ||
| 9 | Disconnect coolant hoses (5) from DC/DC converter (2) and collect escaping coolant using a suitable container or rags | ||
| 10 | Disconnect electrical connector of high-voltage line (4) | ||
| 11 | Protect electrical connectors on high-voltage line (4) and on DC/DC converter (2) against moisture | Figure | |
| 12 | Disconnect electrical connector (6) | ||
| 13 | Unclip electrical subharness (9) from high-voltage battery frame at the arrows | Figure | |
| 14 | Unscrew nuts (10) from retaining plate of charger for high-voltage battery (11) and remove retaining plate | *BA54.10-P-1016-02G | |
| 15 | Push charger for high-voltage battery (11) to the left | ||
| 16 | Unscrew bolts (3, 8) from DC/DC converter (2) | *BA54.10-P-1011-02G | |
| 17 | Remove DC/DC converter (2) | ||
| Clean | |||
| 18 | Clean coolant from load compartment and components | ||
| 19 | Install in the reverse order | ||
| Completion | |||
| 20 | Bleed and top up coolant circuit | AR20.00-P-1147GQA | |
| Initial startup | |||
| 21 | Perform initial startup of high voltage on-board electrical system | AR54.10-P-1150GQA | |
| 22 | Transfer previously saved basic data to DC/DC converter control unit (2) | Only after replacing the DC/DC converter control unit (2). | |
| AD00.00-P-2000-04A | |||
| 23 | Perform initial startup of DC/DC converter control unit (2) using diagnostic system | Only after replacing the DC/DC converter control unit (2). | |
| AD00.00-P-2000-04A |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | |
|---|---|---|---|
| BA54.10-P-1011-02G | Screw/bolt, DC/DC converter to bracket | Nm | 20 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | |
|---|---|---|---|
| BA54.10-P-1012-02G | Nut, positive line to DC/DC converter | Nm | 15 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | |
|---|---|---|---|
| BA54.10-P-1013-02G | Screw/bolt, ground line to DC/DC converter | Nm | 16 |
HIGH-VOLTAGE BATTERY
| Number | Designation | Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN)) | |
|---|---|---|---|
| BA54.10-P-1016-02G | Nut, charger terminal rail to battery frame | Nm | 23 |