check engine light MERCEDES-BENZ GLA 2020 User Guide

G
WARNING
During thechargi ngprocess ,a battery produceshydrogen gas.Ifashort circuitoccurs or
spar ksare created ,the hydrogen gascan ignite. Thereisarisk ofan explo sion.
R Make surethattheposi tive terminal ofaconnected batterydoesnotcome intocontact with
vehicl eparts.
R Never placemetal objects ortools onabattery .
R Itis impor tantthatyouobse rvethe descri bedorder ofthe battery terminal swhen connect-
ing and disconnecting abattery .
R When jump-starting, makesurethatthebattery poleswith identical polarityareconnected.
R Itis particu larlyimpor tanttoobse rvethe descri bedorder whenconnecting anddisconnect-
ing the jumper cables.
R Never connect ordisconnect thebattery terminal swhi lethe engine isrunning. G
WARNING
A discha rgedbattery canfreeze attempera turesbelow freezing point.Whenjump-starting the
vehicl eor chargi ngthe battery ,gase scan escap efrom thebattery .There isarisk ofan explo -
sion.
Allow thefrozen battery tothaw outbefore chargingitor jump-starting.
! Avoid
repeatedand lengthy starting attempts. Otherwise,the catal yticconverter couldbe
dama gedbythe non-combusted fuel.
If the indica tor/warni nglamp sdo not light up inthe instrument clusteratlow tempera tures,itis
very likelythat thedischa rgedbattery hasfrozen. Inthis case youmay neither jump-start the
vehicl enor charge thebattery .Let the battery thawfirst.Theservice lifeofathawe d-outbattery
may beshorter. Thestarting characteristics canbeimpa ired,particu larlyat low tempera tures.
Have thethawe d-outbattery checked ataqua lified speci alist worksho p.
Do not start thevehicl eusi ng arapi dchargi ngdevi ce.Ifyou rvehicl e'sbattery isdischa rged,the
engine canbejump-started fromanother vehicleor from asecond batteryusing jumper cables.
Observe thefollowi ngpoints:
R The battery isnot accessi bleinall vehicl es.Ifthe other vehicle'sbattery isnot accessi ble,
jump-start thevehicl eusi ng asecond batteryorajump-starting device.
R You may onlyjump-start thevehicl ewhen theengine andexhau stsystem arecold.
R Do not start theengine ifthe battery isfrozen. Letthe battery thawfirst.
R Only jump-start frombatterie swith a12 Vvoltag erating.
R Only usejumper cablesthat arenot dama gedand have asuffi cient cross-section andinsul a-
ted terminal clamps.
R Make surethatthetwo vehicl esdo not touch.
Make surethat:
R The jumper cablesare not dama ged.
R Non-insul atedparts ofthe terminal clampsdo not come intocontact withother metal parts
whi lethe jumper cablesare connected tothe battery .
R The jumper cablescannot comeintocontact withparts thatcanmove whentheengine isrun-
ning, suchasthe V-belt pulley orthe fan.
X Secure thevehicl eby app lying the electric parkingbrake.
X Shift thetransmissi ontoposi tion 005D.
X Turn theSmartKey toposi tion 005Ainthe ignitio nlock andremove it. Jump-star
ting
297Breakdown assistance Z