Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. - AS00.00-Z-0005-01A

WARNING: This page does not describe the selected car, but rather 203 other vehicles, including the 2020 Mercedes-Benz SLC300, 2020 Mercedes-Benz SL550, 2020 Mercedes-Benz SL450, 2020 Mercedes-Benz S65 AMG, and 2020 Mercedes-Benz GLA250. However, it is still accessible from the selected car via links, so may be relevant.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

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Potential risks

Risk of accident

Caused by the vehicle driving off by itself while being started (e.g. during compression test) due to engaged gear or with the engine running and vehicles with automatic transmission due to selector lever position "P" or

"N" not being engaged (except for vehicles that do not have selector lever position "P").

Risk of injury

Severe injuries can occur near a running engine caused by its rotating parts.

Because the engine heats up when operating, serious burns can be caused by touching unshielded parts.

Safety instructions/precautions

In general, only work on a running engine when it is absolutely necessary.
Apply parking brake before starting the engine.
The vehicle is to be secured against moving forwards or backwards.
The person performing tests on vehicles with engines running must sit in the driver seat to be able to prevent the vehicle from moving.
It is not permitted for persons to be in the hazard area in front of and behind the vehicle while performing tests.
Shift the gearshift lever to neutral on vehicles with manual transmission.
On vehicles with automatic transmission, move selector lever into position "P" or "N" (exception for vehicles that do not have selector lever position "P").
On vehicles that do not have selector lever position "P", the selector lever is to be secured against unauthorized access.
Wear closed and snug-fitting work clothes.
Remove all jewelry such as chains, rings, etc.
Wear suitable head wear to cover long hair.
Before commencing any work on the running engine, familiarize yourself with the location of potentially hot parts.
When carrying out work when starting the engine or when engine is running do not touch any hot and rotating parts .

First aid measures in the event of burns

Do not rub the skin areas affected; rinse with plenty of cold water and cover skin with sterile dressings.
Consult a physician immediately.