VW Polo manuals

Volkswagen Polo Service & Repair Manual: Engine Cooling

Because towing places higher demands on the engine cooling system, the cooling system is enhanced in vehicles that have factory-installed trailer hitches, if necessary. This is done by installing a stronger or a second coolant fan and/or a larger radiator. Vehicles designed for hot climates and/or with an A/C system already have the enhanced engine cooling system. In the Passat, a stronger coolant fan (PR number 0Y2) may also be installed alone at the factory. This makes it easier to install a trailer hitch later.
The cooling system should also be enhanced when a trailer hitch is retrofitted, if the system was not already modified at the factory. Otherwise the cooling system could overheat under increased engine load, for example when driving in mountains, in high temperatures or with high towing weight. When converting the cooling system, use the engine cooling system components designed for towing listed in the ETKA electronic parts catalog. Refer to the procedures in the applicable repair manuals.
Enhancing the cooling system may only be avoided if the engine will only be under moderate load, for example:
the combined weight is considerably less than the permitted amount,
no high outside temperatures,
no long, steep grades,
no driving at high altitude.
The coolant temperature gauge must always be monitored closely. If the needle in the gauge moves high into the hot zone, reduce speed immediately. It may be necessary to take a break to allow the engine to cool. When doing this, let the engine run at idle for approximately 2 minutes to prevent heat buildup.
  Note
In vehicles with an A/C system, switching the system off will reduce the load on the engine cooling system. This also improves vehicle acceleration and makes passing other vehicles safer.
If the cooling system is not enhanced, the seller must inform the buyer when selling the vehicle.
   
Exterior Rearview Mirror

If the traffic behind the trailer cannot be seen in the standard exterior rearview mirrors, additional exterior mirrors must be installed. Both exterior mirrors must be installed on folding mounts and adjusted to provide a sufficient range of vision behind the vehicle.

Towing Recognition Control Module -J345
General Information The Towing Recognition Control Module -J345- recognizes “trailer mode” when there is a power decrease of at least 5 W & ...

Reinforced Shock Absorbers and Coil Springs
Reinforced shock absorbers and coil springs on the vehicle rear axle reduce pitching motions between the vehicle and the trailer. If not already installed in th ...

Other materials:

Wiring Harness Repair Set -VAS1978
The Wiring Harness Repair Set -VAS1978- makes optimal repair quality possible in the realm of vehicle electronics. Using the tools, repairs affecting harness connectors and for breaks in wiring can be performed. For this purpose, complete repair wires wi ...

Seat belt protection
Fig. 49 Driver restrained by a properly positioned seat belt during a sudden braking manoeuvre First read and observe the introductory information and safety warnings Correctly fastened seat belts can make a major difference. When fastened properly, seat belts hold the vehicle occupants in ...

Cleaning the engine compartment
First read and observe the introductory information and safety warningsThe engine compartment of any motor vehicle is a hazardous area . The engine compartment should be cleaned by a qualified workshop. Corrosion protection could be removed and electrical components damaged if the compartmen ...

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