If and when281
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Sun visor light– Carefully remove the lamp, using the flat side of the screwdriver, 
as shown in the figure  ⇒fig. 202 . – Remove the bulb, moving it in the direction of the arrow and 
outwards  ⇒fig. 202 .
Jump-startingJump leads
The jump lead must have a su fficient wire cross section.If the engine fails to start because of a discharged battery, the battery can be 
connected to the battery of another vehicle to start the engine.
Jump leads
Jump leads must comply with standard  DIN 72553 (see manufacturer's docu-
mentation). The wire cross section must be at least 25 mm
2 for petrol engines 
and at least 35 mm
2 for diesel engines.
Note
•The vehicles must not touch each other, otherwise electricity could flow as 
soon as the positive terminals are connected.•The discharged battery must be properly connected to the vehicle elec-
trical system.
Fig. 201  Removing sun 
visor lightFig. 202  Removing sun 
visor light
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If and when283
Safety First
Operating Instructions
Practical Tips
Technical Specifications
11. Turn on the heater blower and heated rear window in the vehicle 
with the flat battery. This helps minimise voltage peaks which are 
generated when the leads are disconnected.
12. When the engine is running, disconnect the leads in reverse  order to the details given above.Connect the battery clamps so they have good metal-to-metal contact with 
the battery terminals.
If the engine fails to start, switch off the starter after about 10 seconds and 
try again after about half a minute.
WARNING
•Please note the safety warnings referring to working in the engine 
compartment  ⇒page 232, “Working in the engine compartment”.•The battery providing assistance must have the same voltage as the flat 
battery (12V) and approximately the same capacity (see imprint on 
battery). Failure to comply could result in an explosion.•Never use jump leads when one of the batteries is frozen. Danger of 
explosion! Even after the battery has thawed, battery acid could leak and 
cause chemical burns. If a battery freezes, it should be replaced.•Keep sparks, flames and lighted cigarettes away from batteries, danger 
of explosion. Failure to comply could result in an explosion.•Observe the instructions provided by the manufacturer of the jump 
leads.•Do not connect the negative cable from the other vehicle directly to the 
negative terminal of the flat battery. The gas emitted from the battery could 
be ignited by sparks. Danger of explosion.•Do not attach the negative cable from the other vehicle to parts of the 
fuel system or to the brake line.
•The non-insulated parts of the battery clamps must not be allowed to 
touch. The jump lead attached to the positive battery terminal must not 
touch metal parts of the vehicle, this can cause a short circuit.•Position the leads in such a way that they cannot come into contact 
with any moving parts in the engine compartment.•Do not bend over the batteries. This could result in chemical burns.Note
The vehicles must not touch each other, otherwise electricity could flow as 
soon as the positive terminals are connected.
WARNING (continued)
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