Treatment of battery when the car is laid up - ra54001400006x(0006)

Model 140

Preliminary work:

Charge battery, check state of charge and capacity, A (Charging, checking the state and capacity of the battery ).

Operation no. of operation texts and work units or standard texts and flat rates:

Observe warning information and safety regulations (Initial filling of the battery , A).

Retract trunk lid handle by actuating switch on trunk lock.

Fig 1: Identifying Trunk Lock

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

NOTE: As of approx. 01/95 the switch on the trunk lock has been eliminated. In this case it is necessary to retract the trunk lid grip manually with the lever (1) and switch off the closing assist with the switch (2). Lock vehicle manually or with infrared remote control.

Fig 2: Identifying Lever And Switch

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The pin in the trunk lid auxiliary lock should not be extended, if necessary repeat locking procedure.

Fig 3: Identifying Trunk Lid Auxiliary Lock

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Disconnect ground cable from battery.
Recharge battery every three months and then measure electrolyte density.

Electrolyte density specification 1.28 kg/dm³ (see table).

Never allow the battery to stand discharged, otherwise sulfate will deposit on the plates. Sulfated plates damage the battery leading to premature failure.

Anti-freeze protection as function of state of charge

State of charge in kg/dm³ at 20 °C	Electrolyte density	Normal solidification temperature of electrolyte in °C
charged	1.28	- 65
semi-charged	1.20	- 30
discharged	1.12	- 4

NOTE: The electrolyte density is dependent on the temperature and varies by 0.01 kg/dm³ for each 15 °C.

Examples:

Electrolyte density at 20 °C 1.28 kg/dm³

Electrolyte density at 35 °C 1.29 kg/dm³

Electrolyte density at 5 °C 1.27 kg/dm³

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