When assessing safety after an accident, fire or problems with lithium-ion batteries, all the following information relevant to the vehicle must be observed before starting work!
Otherwise the quality of the work carried out cannot be guaranteed.
| Check | ||
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 | ||
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 | |
The required Mercedes-Benz specific qualifications/instructions can also be obtained from Mercedes-Benz Global Training. | |||
If you do not have the required qualification, | |||
| |||
you may not assess the safety on vehicles with lithium-ion batteries! | |||
If you do have the required qualification, | |||
| |||
proceed with operation step 2. | |||
2 | Check high-voltage battery. | ||
| Check high-voltage battery | Model 447 with engine 780.702 | |
| Check high-voltage battery | Model 447 with engine 780.701 | |
| Perform diagnosis on removed high-voltage battery | Model 447 with engine 780.701 | |
| Perform diagnosis on removed high-voltage battery | Model 447 with engine 780.702 | |
| Check lithium-ion battery | Model 447 with engine 780.701/702 | |
| Check housing of lithium-ion battery | Model 447 with engine 780.702 | |
| Check high-voltage on-board electrical system for damage | Model 910 with engine 780.703 | |
| Check high-voltage on-board electrical system for damage | Model 447 with engine 780.701/702 | |
| Analysis sheet for transportability of high-voltage batteries, form | Model 447 with engine 780.701/702 | |
| Analysis sheet for transportability of high-voltage batteries, form | Model 910 with engine 780.703 | |
| Analysis sheet for transportability of high-voltage batteries, form | Model 639.603/703 with engine 780.994 | |
Before driving into the workshop, make an initial assessment to see if there are any acute problems! |