Mercedes-Benz Unimog recalls

The battery supply line for the engine electrical system may be incorrectly routed and could result in a short circuit. This will produce a thermal overload of the battery line and melting of the protective sheath may occur. There is also a possibility that all electrics could be lost the engine could stop and fire could start.

Fix: Recall the vehicles that are likely to be affected to check and if necessary correct the routing of the battery supply line for the engine electrical system.

4 vehicles · built 12 Dec 2015 to 23 Feb 2017

A seat mounting may not conform to specifications. This may also impact on seat belt mountings and in the event of a collision the seat and/or belt may not act as intended.

Fix: On affected vehicles replace seat mounting console

151 vehicles · built 1 Mar 2007 to 30 Sep 2013

The power supply lines for the cab electrical system may not be fastened correctly at the electrical connecting point mounted on the cab firewall and as a result may be loose. A loose cable can cause implausible displays and fault messages and a complete detachment from the connecting point can lead to a complete failure of the vehicle electronics including the lights.

Fix: Recall the vehicles that are likely to be affected to check the fastening for the power supply at the electrical connecting point and if necessary correct the fastening and connections.

27 vehicles · built 3 Dec 2013 to 5 Jan 2016

On certain models with road-railer conversion it is possible that in combination with the tyres MITAS 275/90 R22.5 SRT preliminary damage to the tyres may occur due to intensive rail usage. As a result the road properties of the affected tyres may be restricted to the extent that a sudden loss of air or bursting due to heating up of the tyre during lengthy transport on the road and at high speeds cannot be ruled out. This would constitute or increase a risk of accident.

Fix: The recall has two elements: 1. the maximum speed of the vehicle will be temporarily restricted by means of a variable parameter to 65km/h and 2. the tyre inflation pressure adapted as per sheet inserted in the operator�s Manual for the vehicle as a remedial action.

10 vehicles · built 10 Nov 2011 to 5 Dec 2015

Damage and leaks at the elastomer stop plug of the return line to the hydraulic valve block may occur due to sudden pressure peaks in the hydraulic system. It could therefore be possible that up to 40 litres of hydraulic fluid to escape in a short time unnoticed by the driver. If this damage occurs the vehicle can still be stopped safely. The hydraulic fluid that escapes will increase the risk of collision for other road users

Fix: Recall the vehicles that are likely to be affected to replace the elastomer stop plug at the hydraulic valve block with an appropriate screw plug.

3 vehicles · built 15 Apr 2015 to 20 May 2015

It has been established that Oil Carbon and Granulated Dust contamination could cause the ventilation function of the Shutoff and Safety Valve to be impaired. The internal air pressure of the Safety Valve can therefore increase from 18.5bar to over 40bar. This can result in the failure/rupture of the top section of the housing of the air drier cartridge. The brake system will remain operation to enable the driver to bring the vehicle to a control stop after they hear the rupture.

Fix: Recall all affected vehicle to install a pressure limiting valve.

52 vehicles · built 15 Feb 2008 to 27 Nov 2013

It is possible due to its location that the muffler on the air drier may freeze and icing may occur. This can cause a blockage of the vent line; this in turn will cause the pressure in the air drier to rise beyond its venting pressure of 18.5 bar to in excess of 40 bar. This can result the top section of the air drier cartridge housing becoming detached. The driver should be aware of the issue due to the noise emitted and the brake system will still operate allow you to stop the vehicle safely. However the brake system could still be compromised.

Fix: Recall all affected vehicle and reposition air drier muffler.

51 vehicles · built 20 Jul 2011 to 17 Sep 2013

The electric heater of the charge air preheating system can overheat and a vehicle fire may occur.

Fix: Recall the vehicles that are likely to be affected to carry out modifications to the electrical actuation system of this heater.

11 vehicles · built 1 Jan 2009 to 31 Dec 2010

On vehicles equipped with four wheel steering it is possible that if the vehicle is used where extreme axle articulation is experience the service brake lines between the ABS solenoid valves and brake chambers can suffer tensile stress and subsequently fail.

Fix: Recall all affected vehicles and replace the affected brake lines.

7 vehicles · built 1 Jan 2001 to 3 Nov 2010

It has been identified the steering knuckle arm fitted to vehicles with front mounting plates or front mounted implement can suffer fatigue fractures as a result of higher front axle loads. This can result in failure of the arm and the loss of directional control.

Fix: Recall all affected vehicles for the replacement to the steering arm.

2 vehicles

It has been identified that on some vehicles the weld seams of the transverse control arms for the front and rear axles may be faulty at the transition between the bushing and the tube. Inasmuch as there may be only spot welds present instead of a continuous weld seam. In this condition the transverse control arms cannot fully absorb the forces which might occur which can lead to the weld breaking.

Fix: Recalled vehicles will have the subject control arms checked for weld completeness. The arms will be changed if found to be non compliant.

286 vehicles · built 1 Jan 2008 to 31 Dec 2008

It has been identified that malfunctions may occur within the clutch control. As a resultwhen a vehicle is in a low gear and the working speed control is active the vehicle cannot be stopped by application of the service brake. In these circumstances the vehicle can only be stopped by switching off the working speed control switching off the engine or by engaging neutral.

Fix: It is therefore necessary to replace the gear control unit or change the settings.

14 vehicles · built 1 Jan 2006 to 31 Dec 2007

It is possible that the steering box mounting bolts may not have been correctly installed. This may result in the bolts becoming loose which could affect the driver's directional control of the vehicle.

Fix: Recall all affected vehicles and replace the subject bolts.

1 vehicle

A malfunction within the clutch control may occur which if 1st or 2nd gear is selected it may not be possible to stop the vehicle using the service brake.

Fix: Recalled vehicles will have the gear control unit replaced. Additionally following checking the clutch control unit may also require replacement.

23 vehicles

The possibility exists that on a certain number of vehicles air pockets can build up in the clutch hydraulics system which will lead to difficulty in changing gear and selecting neutral..

Fix: Recall the vehicles that are likely to be affected to replace the central clutch release bearing the bracket for the clutch booster and the clutch control unit.

7 vehicles