On-Board Electrical System - Mercedes-Benz Citan 2012 Introduction Into Service Manual

Series 415 city van

Hide thumbs

Table Of Contents

Table of Contents

Batteries of different capacity/different design are

available for the Citan. They are located in the engine

compartment and are generally maintenance-free. The

following batteries are used depending on the vehicle

and market:

• L2: fluid-filled, 60 Ah/510 A EN (countries with

moderate/warm climate)

• L3: fluid-filled, 70 Ah/720 A EN (automatic or

manual transmission in cold countries)

• L3: VRLA, 70 Ah/760 A EN - a sealed lead-acid

battery (VRLA-AGM), whereby the electrolyte is

bound to a mat made of glass fiber (VRLA = Valve-

Regulated Lead Acid, AGM = Absorbent Glass Mat),

(all countries in combination with ECO start/stop)

Alternators

Alternator

Starter output with S&S

Fuse box

The fuse box for various electrical devices is located

on the left below the instrument cluster. The fused

components are indicated by corresponding symbols.

Control systems

ESM (Energy Smart Management) is an intelligent

alternator management system which maintains the

on-board voltage constant irrespective of the driving

condition and prevents overvoltage. Controlling the

alternator also allows fuel to be saved. This system is

standard on the diesel engine with 81 kW and on the

gasoline engine and is also available as special equip-

ment on the lower-output diesel engines.

– This printout will not be recorded by the update service. Status: 09 / 2012 –

The high-quality batteries are designed to remain

start-capable even after extended idle periods:

• In cold countries, without ECO start/stop: 80 days

• In warm countries, without ECO start/stop: 70

days

• In cold and warm countries, with ECO start/stop:

80 days

• In storage: over 30 days

• Long-term storage: Service every two months

(check and charge, manufacturer recommendation

RSA)

Diesel engines

MO1

MO2

14 V/150A

1.4 kW

Interfaces for external data exchange

Two body manufacturer systems are available to allow

body manufacturers to easily modify the vehicle elec-

tronics:

• Body manufacturer interface. Wiring for

connecting a body manufacturer interface behind

the dashboard.

• Body manufacturer special module. The body

manufacturer special module allows the electronic

system of the vehicle to be accessed. The system

is not diagnosis-capable and is available for LHD

vehicles.

Introduction to CITAN, Model Series 415