2000 MERCEDES-BENZ C-Class engine

Automatic Climate Control
(Models C 280 and C43 AMG)



The system is always at operational readiness, except when manually
switched off. The automatic climate control only operates with the engine
running. The temperature selector should be left at the desired temperature
setting.
The temperature selected is reached as quickly as possible. The system
will not heat or cool any quicker by setting a higher or lower temperature.


1. Air volume control for center air outlet,
turn wheel up to open
2. Air volume control for side air outlet.
To open air outlets:
Turn wheel to position
3. Center air outlets, adjustable
4. Side air outlets, adjustable
5. Display and Controls



The automatic climate control removes considerable moisture from the air during operation in the cooling mode.
It is normal for water to drip on the ground through ducts in the underbody.

Important !
This vehicle is equipped with an air conditioner system that uses HFC-134a (HFC hydrofluorocarbon) as a refrigerant.
Repairs should always be performed by a qualified technician, and refrigerant should be collected in a recovery
system for recycling.

Display and Controls
Press to activate, indicator lamp is on while activated.
Automatic mode Air recirculation
Raise temperature Air distribution, manual
Lower temperature Economy mode
Defrost Air volume, manual
Rear window defroster Residual engine heat
utilization
Basic Setting - Automatic Mode
Press button for automatic mode.
Simultaneously press both
and button for temperature setting of 72°F.



Air volume and distribution are controlled
automatically. This setting can be used all year
around.

Economy
The function of this setting corresponds to the
automatic mode. However, because the air
conditioning compressor will not engage (fuel
savings), it is not possible to air condition in this
setting.
Press button to activate.
Press button once again to return to previous
setting.

Air Recirculation
This mode can be selected to prevent annoying odours or dust from entering the car's interior.
Outside air is not supplied to the car's interior.
To select, press button.
To cancel, press button again.
The system will automatically switch from recirculated air to fresh air
• after approx. 5 minutes at outside temperatures below approx. 40°F (5°C),
• after approx. 30 minutes, at outside temperatures above approx. 40°F (5°C),
• after approx. 5 minutes, if button is pressed.
Notes:
If the windows should fog up from the inside, switch from recirculated air back to fresh air.
At high outside temperatures, the system automatically engages the recirculated air mode thereby
increasing the cooling capacity performance, switching to partially fresh air within 20 minutes.


Dust Filter
Nearly all dust particles and pollen are filtered out before outside air enters the
passenger compartment through the air distribution system.
Notes:
Do not obstruct the air flow by placing objects on the air flowthrough exhaust slots below the rear
window.
Also keep the air intake grille in front of windshield free of snow and debris.


Residual Engine Heat Utilization
With the engine switched off, it is possible to continue heating the interior for a short while.
Air volume and distribution are controlled automatically
To select:
Turn electronic key in steering lock to position 1 or 0 or remove electronic key.
Press button.
This function selection will not activate if the battery charge level is insufficient.
To cancel:
Press button.
The system will automatically shut off
• if you turn electronic key in steering lock to position 2,
• after approx. 30 minutes,
• if the battery voltage drops.

Start Lock-Out

Important !
Removing the electronic key from the steering lock ac tivates the start lock-out. The engine cannot be started.
Inserting the electronic key in the steer ing lock deactivates the start lock-out. The engine cannot be started. Inserting
the electronic key in the steering lock deactivates the start lock-out.

Note:
In case the engine cannot be started, the system is not operational. Contact an authorized Mercedes-Benz dealer or
call 1-800-FOR-MERCedes.

Multicontour Seat (optional)

We recommend to adjust the multicontour seat in the following order:
1. Seat cushion depth
2. Backrest bottom
3. Backrest center
4. Side bolster adjustment

Some models may be equipped with multicontour seats. These seats have movable seat cushions,
and inflatable air cushions built into the backrest to provide additional lumbar and side support.
The seat cushion movement and amount of backrest cushion height and curvature can be
continuously varied with regulators (1, 2 and 3) after turning the electronic key in steering lock to
position 2.

The side bolsters of the backrest can be adjusted with rocker switch (4):
• press down forward end-increase side support,
• press down rearward end-decrease side support.

If the engine is turned off, the last cushion setting is retained in memory, and automatically adjusts
the cushion to this setting when the engine is restarted.

Armrest (Rear Bench Seat)

Pull down the armrest. For removal of rear seat cushion, see Index.

Cup Holder in Rear Bench Armrest

Briefly press drawer and pull out to its detent.

Caution !
Keep cup holder closed while travelling. Place only containers
that fit into the cup holder to prevent spills.
Do not fill containers to a height where the contents could spill
during vehicle maneuvers, especially hot liquids.


Adjusting Telescoping Steering Column (optional)


Warning!
Do not adjust the steering wheel while driving. The telescoping
adjustment must be locked while driving. Adjusting the steering
wheel while driving, or driving without the telescoping adjustment
locked could cause the driver to lose control of the vehicle.


Unlocking:
Pull handle (1) out to its stop. The indicator lamp, located in the instrument cluster, comes on.
Adjusting:
To lengthen or shorten the steering column, pull out or push in steering wheel.
Locking:
Push handle (1) in until it engages. The indicator lamp, located in the instrument cluster, goes out.

Important!
With the electronic key in steering lock position 2, an indicator lamp in the instrument cluster comes on. It should go
out when the engine is running. If the indicator lamp does not go out after starting the engine, the adjustable steering
column is not locked properly. Do not drive the vehicle until you have properly locked the steering column.

Cup Holder in Rear Bench Armrest
Briefly press drawer and pull out to its detent.

Caution !
Keep cup holder closed while travelling. Place only containers that fit into the cup
holder to prevent spills. Do not fill containers to a height where the contents could spill
during vehicle maneuvers, especially hot liquids.


Head Restraints, Rear

Folding head restraints backward (with engine running): Press symbol-side of rocker
switch to release the head restraints.
The head restraints will then fold backward for increased visibility.

Placing head restraints upright:
Pull head restraint forward until it locks in position.
Angle of head restraints:
The head restraint angle can be adjusted manually.

Important !
For safety reasons, always drive with the rear head restraints in the upright position
when the rear seats are occupied.
Keep area around head restraints clear of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.

Steering Lock

0 - The electronic key can be withdrawn in this position only. The steering is locked with the electronic key removed
from the steering lock. The electronic key an be removed only with the selector lever in position "P" and the foot off
the brake pedal. After removing the electronic key or with the electronic key in steering lock position 0, the
selector lever is locked in position "P".
1 - Steering is unlocked. (If necessary, move steering wheel slightly to allow the electronic key to be turned clockwise
to position 1.) Most electrical consumers can be operated. For detailed information see respective subjects.
2 - Driving position.
3 - Starting position.

Refer to Index for Starting and turning off the engine.


Warning !
When leaving the vehicle always remove the electronic key from the steering lock, and lock the vehicle.
Do not leave children unattended in the vehicle, or with access to an unlocked vehicle.
Unsupervised use of vehicle equipment may cause serious personal injury.


Important !
If the electronic key is left in the steering lock position 0 for an extended period of time, it can no longer be turned
in the lock. In this case, remove electronic key from steering lock and reinsert.

Notes:
A warning sounds when the driver's door is opened with the electronic key in steering lock position 1 or 0. With the
engine at idle speed, the charging rate of the alternator (output) is limited. It is therefore recommended to turn off
unnecessary electrical consumers while driving in stop-and-go traffic. This precaution helps to avoid draining of the
battery. Unnecessary strain on the battery and charging system may be minimized by turning off the following power
consumers, for example: Heated seats, rear window defroster. In addition, the automatic climate air volume control
should be set to the lowest position. The steering lock can only be unlocked with the vehicle battery properly
connected.

Caution !
To prevent accelerated battery discharge and a possible dead battery, always remove the electronic key from the
steering lock. Do not leave the electronic key in steering lock position 0.