trailer MERCEDES-BENZ A CLASS 2012 Repair Manual

Trailer tow hitch
Mounting dimensions
! If you have a trailer tow hitch retrofitted,
changes
to the engine cooling system may
be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chas-
sis.
Trailer towing is not permissible on the fol-
lowing models:
R A 45 AMG 4MATIC
R Vehicles with the AMG Sports package Example: anchorage points for the trailer tow hitch
:
Anchorage points
; Overhang dimension
= Rear axle centre line
For trailer tow hitches fitted at the factory, the
overhang
dimension including protective cov-
ering is 794 mm. 348
Trailer tow hitch
Technical data

Trailer loads
Vehicles with manual transmission !
Use a drawbar noseweight as close as possible to the maximum permissible noseweight.
Do not use a noseweight of less than 50kg, otherwise the trailer may come loose.
Note that the payload and the rear axle load are reduced by the actual payload. Permissible
trailer load,
braked 18 Permissible
trailer load,
braked 19 Permissible
trailer load, unbraked Maximum
drawbar nose-
weight 20 Permissible
rear axle
load when towing a trailer A 180
21 1500 kg 1200 kg 685 kg 75 kg 985 kg
A 200
21 1500 kg 1400 kg 685 kg 75 kg 980 kg
A 180 CDI
21 1500 kg 1200 kg 695 kg 75 kg 980 kg
A 200 CDI
21 1500 kg 1500 kg 720 kg 75 kg 975 kg
The actual noseweight may not be higher than the value which is given. The value can be found
on the trailer tow hitch or trailer identification plates. The lowest weight applies.
You can attach carrier systems, e.g. bicycle racks or load-bearing implements, on the ball
coupling. The maximum noseweight of

75 kg applies when using carrier systems on the ball
coupling.
Vehicles with automatic transmission !
Use
a drawbar noseweight as close as possible to the maximum permissible noseweight.
Do not use a noseweight of less than 50kg, otherwise the trailer may come loose.
Note that the payload and the rear axle load are reduced by the actual payload.
Trailer towing is not permissible on the following models:
R A 45 AMG 4MATIC
R Vehicles with the AMG Sports package
18 At a minimum gradient-climbing capability of
8% from a standstill.
19 At a minimum gradient-climbing capability of 12% from a standstill.
20 The drawbar noseweight is not included in the trailer load.
21 BlueEFFICIENCY Trailer tow hitch
349
Technical data Z

Permissible
trailer load,
braked 18 Permissible
trailer load,
braked 19 Permissible
trailer load, unbraked Maximum
drawbar nose-
weight 20 Permissible
rear axle
load when towing a trailer A 180
21 1500 kg 1200 kg 695 kg 75 kg 955 kg
A 200
21 1500 kg 1400 kg 695 kg 75 kg 950 kg
A 250
21 1500 kg 1500 kg 720 kg 75 kg 960 kg
A 180 CDI
21 1500 kg 1200 kg 735 kg 75 kg 950 kg
A 200 CDI
21 1500 kg 1500 kg 735 kg 75 kg 950 kg
A 220 CDI
21 1500 kg 1500 kg 740 kg 75 kg 950 kg
The actual noseweight may not be higher than the value which is given. The value can be found
on the trailer tow hitch or trailer identification plates. The lowest weight applies.
You can attach carrier systems, e.g. bicycle racks or load-bearing implements, on the ball
coupling. The maximum noseweight of
75 kg applies when using carrier systems on the ball
coupling. 24 GHz radar sensor system (country overview)
The 24 GHz radar sensor system requires separate approval for each country. When you are
driving in a country in which the radar sensor system is not approved, you must deactivate
the system using the on-board computer (Y page 223).
The current country overview can be obtained from a Mercedes-Benz Service Centre or on
the Internet at:

http://www.mercedes-benz.de/betriebsanleitung.
Vehicles with a navigation system: the radar sensor system is deactivated automatically
near radio telescope facilities. A display message appears in the multifunction display to tell
you that the radar sensor system is being switched off ( Y page 246).
If Blind Spot Assist is active, it will be deactivated automatically (Y page 219).
If deactivation does not occur automatically, you must deactivate the radar sensor system
using the on-board computer (Y page 223).
Vehicles without navigation and vehicles for Australia: you must deactivate the radar
sensor system using the on-board computer when you are near a radio telescope facility
(Y page 223).
18 At a minimum gradient-climbing capability of
8% from a standstill.
19 At a minimum gradient-climbing capability of 12% from a standstill.
20 The drawbar noseweight is not included in the trailer load.
21 BlueEFFICIENCY350
24 GHz radar sensor system (country overview)
Technical data