Danger | Risk of death caused by vehicle slipping or toppling off of the lifting platform. | Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. | |
Danger | Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC. | No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers. | |
Danger | Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | |
Topical note | General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment | ||
Topical note | Notes on battery | ||
| Check | ||
1 | Check whether you have the required qualification for assessing the safety of high-voltage on-board electrical systems. | ||
| Service Information: Qualification measures for working on high-voltage on-board electrical systems, lithium-ion batteries and gaseous fuel drive systems | ||
Tests before entry into workshop for a vehicle with faults in the high-voltage battery or accident damage | |||
2 | Before entry into the workshop, check high-voltage batteries and detachable parts near high-voltage batteries via a visual check for fire, smoke development, fire effects, or internal heat development. | Smoke is often an early indication of fire. | |
If smoke development, tarnishing or scorched component parts are identifiable: | |||
| |||
Immediately make an emergency call using the appropriate location- and country-specific emergency call number; do not touch the high-voltage batteries, and exit the danger zone. | |||
3 | Before entry into the workshop, check whether there is accident damage to the underbody or near the high-voltage batteries. | ||
| Service Information: Handling high-voltage batteries after an accident with airbag and/or pyrofuse triggering | ||
4 | Before entry into the workshop, check whether a pungent odor is identifiable near the high-voltage batteries. | ||
5 | Bring vehicle into the workshop. | If no problems were determined during operation steps 2 to 4. | |
Additional tests in the workshop for a vehicle with faults in the high-voltage battery or accident damage | |||
6 | Connect diagnostic system and run quick test. | ||
| Connect STAR DIAGNOSIS and read out fault memory | Model 447 | |
| Connect/disconnect diagnostic unit | Model 910 | |
If there is a fault message for a high-voltage component or there is an insulation fault, | |||
| |||
rectify these problems as part of the maintenance work in accordance with the repair documentation. | |||
7 | Lift vehicle with vehicle lift. | Lift/jack up vehicle | |
Topical note | Special instructions for lifting and supporting vehicle | Typ 910 | |
Determine vehicle lift support points on vehicle for vehicle lift with support armsModel 910 | |||
8 | Check housing including threaded connections of high-voltage batteries to extent possible for mechanical deformation, cracks, and openings. |
| |
Engine 780.702 in model 447 | |||
Commercially available devices/tools | |||
If needed for a more exact determination of findings: | |||
| |||
Remove underfloor panels. | |||
Remove/install underbody paneling | |||
Remove/install underbody trim on high-voltage battery carrier | |||
| Remove | ||
9 | Remove the respective high-voltage battery. | If, based on previous tests, the high-voltage battery needs to be replaced or if the high-voltage battery needs to be removed for further tests. | |
Engine 780.701 in model 447 | |||
Engine 780.702 in model 447 | |||
Engine 780.703 in model 910 | |||
Taking back a high-voltage battery | |||
10 | Determine transportability of the removed high-voltage battery and enter in the analysis sheet for the transportability of high-voltage batteries. |
| |
Engine 780.702 in model 447 |
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