Volkswagen Polo Service & Repair Manual: Towing Recognition Control Module -J345
The Towing Recognition Control Module -J345- recognizes
“trailer mode” when there is a power decrease of at least 5 W
→ Note and transmits this information to various control
modules via the CAN data bus. |
The Vehicle Electrical System Control Module -J519- and the
Comfort System Central Control Module -J393- supply the Towing
Recognition Control Module -J519- with information via the CAN
data bus. |
1) |
At least turn signals or side marker lamps must
be switched on to detect “trailer mode”. |
For information on testing control modules, diagnosing
malfunctions, malfunction indicators and fault finding. Refer to
→ Electrical Equipment; Rep. Gr.97. |
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Towing Recognition Control Module
-J345-, Retrofitting |
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Retrofitting a Towing Recognition Control Module -J345-
approved by Volkswagen is possible, but it can pose problems due
to the connection with the vehicle CAN data bus. The control
module must then be coded in “Guided Fault Finding” using the
→ Vehicle diagnostic tester. |
Note
Installation of control module solutions that are available
from third parties and are not approved by Volkswagen is not
recommended. Installing such equipment voids the warranty.
Generally, these are connected to the tail lamps and not
integrated into the vehicle electrical system. This can result
in a misdiagnosis from the lamp monitoring function or to
malfunctions. Also, dimmed bulbs such as combined brake and tail
lamps cannot be activated. |
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Towing Recognition Control Module -J345-, Coding
Refer to
→ Electrical Equipment; Rep. Gr.97 finformation on coding.
The backup lamps, »continuous current«
and charging cable can be used on the trailer with the
»13-pin« trailer socket. A
»13-pin« trailer socket is
re ...
Because towing places higher demands on the engine cooling
system, the cooling system is enhanced in vehicles that have
factory-installed trailer hitches, if necessar ...
Other materials:
Tires with Rim Protector
The tire industry produces tires with rim protector for
light alloy wheels (rim protector). The rim protector prevents
damage to the light alloy wheels caused by contact with curbs.
Using tires with rim protector on steel wheels with wheel
...
Gloss Level Adjustment of HS Clear Lacquer and HS Top Coat
Edition 04/2013
Adjusting of varying gloss grades of HS clear lacquer and HS
top coat by mixing Matting Component -LVM 769 810 A2- for
plastic and metal surfaces
The reference material that addresses the factors that
...
Checking the coolant level and refilling coolant
Fig. 139 In the engine compartment: mark
on the coolant expansion tank
Fig. 140 In the engine compartment: coolant
expansion tank cap
First read and observe the introductory information
and safety warningsThe warning lamp for the engine coolant will light up
if the engine coolant level i ...
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