Checking and refilling levels
48-volt battery
General information
✓ Valid for: Mild Hybrid vehicles (MHEV)
Fig.237 48-volt battery: hazard warning
1
Never expose the 48 volt battery to sources
of fire, sparks or unprotected flames.
2
The instruction manual and the workshop
documentation contain further information
and warnings in this regard.
3
Always keep children away from the 48
volt battery.
4
If the 48-volt battery is damaged, fluid can
leak and very corrosive acids can form. The
battery should only be handled by quali-
fied personnel.
5
All maintenance works involving the 48 volt
battery should only be performed by duly
qualified and trained technical sta .
6
Take care when handling flammable sub-
stances.
In addition to a 12-volt battery, the vehicle may
be fitted with a 48-volt battery located under-
neath the front passenger seat.
The works that are to be carried out on the
48 volt battery should be performed exclusively
by a specialised workshop with duly qualified
technical sta, trained according to the SEAT
guidelines.
Overview of the 48 volt system
The 48 volt system consists of the following
components, among others:
●
48-volt battery
●
12V/48V voltage converter
●
48 volt alternator/starter motor
●
Purple 48 volt cables
48 volt battery warnings
There is a hazard warning sign on the 48 volt
battery ›››Fig.237.
WARNING
Inappropriate handling of the 48 volt battery
can cause serious injuries or death.
●
All maintenance works involving the 48 volt
battery should only be performed by duly
qualified and trained technical sta .
●
Never make any changes to the 48 volt
battery.
WARNING
Make sure the 48 volt battery does not come
into contact with water or other fluids.
●
Liquids may cause short circuits, electrical
shocks and burns.
Troubleshooting
✓ Valid for: Mild Hybrid vehicles
Control lamps and driver messages on the in-
strument cluster display or infotainment system:
48-volt battery
The indicator lamp lights up red. The following
message is displayed:
Battery: Risk of fire! Stop safely and get out
quickly. Call the emergency services.
The 48V battery temperature is too high
.
If this message is displayed on the instrument
cluster, follow the steps below:
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