The Volvo Parts, Accessories &
Performance Specialists Since 1963

Trailer Towing Lighting Adapter Module - P1 S40 V50

Genuine Volvo - 31257593 - 120200

Available to Order
Typically available to ship within a few days
Our Item Number
OEM Reference
Genuine Volvo
Mfr Part Number
Brand Classification
Units Per Car
Product Group
Cross Reference
30664366, 30744597, 31257593

Product Description


Most vehicles will need both the module and wire harness installed.

Your Volvo will need a software update from a VIDA equipped shop to enable the trailer lighting features.

7-pin, Plus feed.

A specially designed cable harness kit for the Volvo S40 and Volvo V50 Only one application can be used at a time with the 7 pin basic kit. However, you must always have the trailer module irrespective of basic kit type. In accordance with ECE regulation 48, trailers with a gross weight exceeding 750 kg require a reversing light. Trailer module (TRM) is not compatible with trailers equipped with LED lamps. The trailer module manages the electrical connection between the vehicle and trailer. The trailer module stores any diagnostic trouble codes. The application number corresponds to the type of socket found on the cable harness for the towbar. The trailer module is primarily designed to handle output signals to the cable harness and towbar for: Direction indicators Brake lights Position lights Back up light Fog lights, rear +12 V voltage 

Technical Data

  • Accessory weight:
  • 7-pin + Trailer module: approx. 0.6 kg (1.3 lbs)
  • 13-pin + Trailer module: approx. 0.9 kg (1.9 lbs)


About Genuine Volvo

Everything IPD supplies under the "Genuine Volvo" designation are the factory original Volvo parts. These are the same parts that Volvo used to manufacture your vehicles on the assembly line. All Volvo supplied Genuine Volvo parts are made to specifications by Volvo and under their strict quality control guidelines. Our customers should expect the same high-quality when purchasing Genuine Volvo products which in the past were exclusively available as dealer only items. Volvo relies on other high-quality OEM manufactures such as Lemforder, Behr, Sachs, Bosch, Valeo, Siemens, VDO, Corteco, and many more to maintain its dedication to quality and safety.

IPD is the exclusive North American distributor for Genuine Classic Volvo parts outside of the Volvo Dealership network. We are proud of our Volvo heritage dating back to 1963, a reputation that is unmatched by others in the industry.

Many may not know this but Volvo in Latin roughly translates to "to roll".  The company was founded back in 1927 by Assar Gabrielsson and Gustaf Larsson as a spin-off from ball-bearing manufacturer SKF.  While the Volvo logo looks like the biology symbol for male, it's really the Swedish symbol for Iron. With a nod to its heritage in alloys, Volvo chose a logo that depicted a ring bisecting at one o’clock. Today Volvo is known around the world as one of the most iconic brands known for safety, longevity, and its enthusiast following.

IPD has been proudly serving the Volvo community since 1963. We are motivated to be the very best destination for your Volvo needs. Our customer and vehicle first approach means that your experience is our first priority. We have truly hassle-free returns, an in depth Volvo blog, and provide DIY Volvo guides and videos for many of our products.

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