Opening the cover
Fig. 163 Polyester vehicle battery cover / plastic vehicle battery cover
Read and observe
and on page 173 first.
The battery is located in the engine compartment - in some models, under-
neath a polyester cover » Fig. 163.
›
Open the battery cover in the direction of the arrow » Fig. 163-
or press the
catch on the side of the battery cover in the direction of the arrow » Fig. 163-
.
›
fold the cover up and remove.
The battery cover is installed in reverse order.
Checking the battery electrolyte level
Fig. 164
Vehicle battery: Electrolyte level
indicator
Read and observe and on page 173 first.
On vehicles with a vehicle battery fitted with a colour indicator » Fig. 164, the
electrolyte level can be determined by looking at the change in colour of this
display.
Air bubbles can influence the colour of the indicator. For this reason carefully
knock on the indicator before carrying out the check.
›
Black colour - electrolyte level is correct.
›
Colourless or light yellow colour - electrolyte level too low, the battery must
be replaced.
Vehicles with a START-STOP system are fitted with a battery control unit for
checking the energy level for recurring engine start.
We recommend that you have the acid level checked regularly by a specialist
garage, especially in the following cases.
›
High external temperatures.
›
Longer day trips.
›
After each charge.
Winter time
The vehicle battery only has a proportion of the starting power in lower tem-
peratures. A discharged vehicle battery may already freeze at temperatures
just below 0 °C.
We therefore recommend that you have the battery checked and, if necessary,
recharged by a specialist garage before the start of the winter.
Note
■
The battery acid level is also checked regularly by a specialist garage as part
of the inspection service.
■
For technical reasons, on vehicles with the description “AGM”, the electrolyte
level cannot be checked.
Charging
Read and observe and on page 173 first.
A properly charged vehicle battery is essential for reliably starting the engine.
A charging operation can be performed if the following conditions are satis-
fied.
The engine is turned off.
The ignition is switched off.
All consumers are turned off.
The bonnet is open.
“Fast charging” with high currents
›
Disconnect both battery cables (first of all “negative”, then “positive”).
174
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