Lighting - Erratic Lamp Operation With Trailer Hooked Up

Title: Caravan and Trailer with LED light

Ref No: US21297.2.3 en-GB

Issuer: -

Partner: 3 US 7510 Volvo Cars North America

Func Group: 8920

Func Desc: recovery and towing unit

Status: Released

Status Date: 09-02-2011

Issue Date: 09/02/2011

Reference:

Attachment





Vehicle Type





CSC Customer Symptom Codes

DTC Diagnostic Trouble Codes

Text

CSC = Customer Symptom Code

If using a printed copy of this document, always check for the latest online version.

This Document supercedes the old one dated 2011-08-25. Changes to this document are: A new TRM is being developed and will be released 2nd quarter of 2012.

DESCRIPTION:

The customer may complain about the vehicle lighting operation after connecting a trailer equipped with Light Emitting Diode (LED) lamps.

The vehicle trailer module (TRM) is designed to operate with incandescent trailer bulb systems only.

Some trailers are using light emitting diodes (LED) instead of incandescent bulbs. This can cause disturbances depending on trailer.

The following issues are those most likely to be identified by the customer:

- The LED lamps on the trailer will pulse when the vehicle is being driven with the trailer/caravan attached

- The rear park assist sensors are not disabled, and a constant tone is heard.

- The park assist camera's distance indicators are not turned off.

- Rear fog light is not turned off.

PRODUCT MODIFICATION:

A new TRM is being developed and will be released 2nd quarter of 2012.

REPORTING:

No more reports are needed

SERVICE:

Please do not replace the TRM due to these symptoms.