See also:

Additives
Only use DEF in accordance with ISO 22241. Do not use additives with DEF and do not dilute DEF with water. This may destroy the BlueTEC exhaust gas aftertreatment system. ...

CLS63 AMG
Even more surprising is the fact that the high-performance AMG is a pretty good daily driver, too … considering it has 116 more horsepower, a firmer suspension, tighter steering and loud exhaust. ...

Parking the vehicle for a long period
If you leave the vehicle parked for longer than four weeks, the battery may be damaged by exhaustive discharge. - Connect a trickle charger. You can obtain information about trickle charg ...