Electrical contacts
Connector pins (example)
At
least once a year or after operation in ardu-
ous conditions such as fording or driving on
roads treated with wet salt:
X
Turn the vehicle key fully back in the igni-
tion lock.
X
Spray the electric contacts on connector
pins : with contact spray.
Battery isolator switch
Battery isolator switch in the battery compartment
(example)
g
Disengaging
1
Engaging
X
Pull out the control lever of the battery iso-
lator switch; see the vehicle's Operating
Instructions.
X
Lubricate the operating lever guide with
acid-proof grease.
Batteries
!
Please observe the following points:
R
Dirty battery terminals and battery sur-
faces cause leak currents, which lead to
the batteries discharging. Always keep
the battery terminals and battery surfa-
ces
clean and dry. Lightly grease the bat-
tery terminals, especially the undersides,
with acid-resistant grease.
R
Only clean batteries with the cell caps
fitted. Otherwise, dirt can enter the bat-
tery cells.
R
Cleaning agents containing fuel corrode
the battery housing. Only clean the bat-
tery housing with commercially available
cleaning agents.
R
The vent holes of the cell caps must be
open. Otherwise, gases cannot escape.
Clean blocked vent holes with a suitable
tool, e.g. a piece of wire. Unscrew the cell
caps first. Otherwise, there is the risk of
a short circuit.
R
If batteries that are not in use have a no-
load voltage of less than 12.4 V, they
must be recharged.
X
Check the battery fluid level; see the vehi-
cle Operating Instructions.
X
Disconnect the batteries; see the vehicle
Operating Instructions.
X
Clean battery terminals and grease lightly
using acid-proof grease.
X
Thoroughly clean the battery compartment
with water and allow it to dry.
X
Reconnect the batteries; see the vehicle
Operating Instructions.
Fuses on the battery compartment
U 300/400/500 only.
16
Fuses on the battery compartment
Maintenance and care
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