Colour dis-Action play 
Light yellow The electrolyte level of the vehicle 
or without is too low. The vehicle battery 
colour should be checked and replaced by a qualified workshop if necessary. 
Black The electrolyte level of the vehicle battery is correct. 
A WARNING 
Any work on the vehicle battery can cause serious chemical burns, explosions and elec-trlc shocks. 
• Always wear eye protection and protective gloves. 
A WARNING (Continued) 
• Electrolyte is very aggressive. lt can burn the skin and can cause blindness. When working with the battery, ensure that your hands, arms and face in particular are protec-ted from acid spillages. 
• Never tilt the vehicle battery. Electrolyte may spill out of the battery vents and cause chemical burns. 
• Never open a vehicle battery. 
• if acid is spilt in your eye or on your skin, rinse immediately for several minutes with cold water. Then consult  a doctor immediate-ly. 
• If acid is swallowed, consult a doctor im-mediately. 
Charging, replacing, disconnecting and connecting the vehicle battery 
r-"f'n First read and observe the introductory L-Jo:.l.l information and safety warnings & on page 362. 
Charging the battery 
The vehicle battery should always be charged by a qualified workshop, as the technology used in fac-tory-fitted batteries requires voltage-limited charg-ing => &. Volkswagen Commercial Vehicles recom-mends using a Volkswagen Commercial Vehicles dealership for this purpose. 
If the battery cannot be charged in a qualified workshop, the charging cables of a suitable battery charger must be connected as described in =>page 443, Jump starting for vehicles with a Start/Stop system. 
Replacing a vehicle battery 
The battery has been developed to suit the condi-tions of its location and has special safety features. If a vehicle battery has to be replaced, discuss the electromagnetic compatibility, size and necessary servicing, output and safety requirements for the new vehicle battery with a Volkswagen Commercial Vehicles dealer before purchase. The vehicle bat-tery should be replaced by a qualified workshop. Volkswagen Commercial Vehicles recommends us-ing a Volkswagen Commercial Vehicles dealership for this purpose. 
Only maintenance-free vehicle batteries compliant with the standards TL 825 06 and VVV 7 50 73 should be used. These standards must be dated July 2012 or later. 
Vehicles with a Start/Stop system =>page 282 or auxiliary heater =>page 332 are fitted with a special vehicle battery. These vehicle batteries may only be replaced by a vehicle battery with the same specifications. 
Disconnecting the vehicle battery 
Please note the following if the vehicle battery has to be disconnected from the electrical system in the vehicle: 
• Switch off all electrical consumers and the igni-tion. 
• Unlock the vehicle before disconnecting the battery in order to avoid triggering the alarm. 
• First disconnect the negative cable and then the positive cable => &. 
Connecting the vehicle battery 
• Switch off all electrical consumers and the igni-tion before reconnecting the vehicle battery. 
• First reconnect the positive cable and then the negative cable=>&. 
Various indicator lamps may light up after the vehi-cle battery has been connected and the ignition is switched on. They will go out if you drive a  short distance at a speed of 15-20 kmlh (10-12 mph). If the indicator lamps remain lit up, the vehicle should be checked by a qualified workshop. 
if the vehicle battery was disconnected for long pe-riods, the system may not able to calculate or cor-rectly display the time when the next service is due =>page 19. Comply with the maximum permissible service intervals =>Booklet Service schedule. "" 
In the engine compartment 365