VOLVO
SWM-DD11 - Communication with control modules. Communication problems
System
Steering Wheel Module (SWM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2007–2011
- Volvo C30 (2007–2013)2012All engines except: D4162T, D5204T, D5204T5
- Volvo C30 (2007–2013)2013Engine B4204S3, B4204S4, B5254T7 only
- Volvo C30 Electric (2011–2013)2011–2013
- Volvo C70 (2006–2013)2006–2011
- Volvo C70 (2006–2013)2012–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2004–2010
- Volvo S40 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
- Volvo V50 (2004–2013)2004–2010
- Volvo V50 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
What does this fault code mean?
The steering wheel module (SWM) has detected that communication with the right steering wheel switch (SWSR) is disturbed or missing, and the switch does not respond. The signals travel over LIN communication, so the fault can lie in the switch, in the cable to it or in the steering wheel module. The radio, phone and RTI controls on the wheel stop responding.
Possible causes
- Communication problems, with the right steering wheel switch (SWSR) not responding
What you can do
- 1If you have a diagnostic tool: activate the buttons on the right steering wheel switch and check in live data that the status changes
- 2Switch the ignition off and check the connector and wiring to the right steering wheel switch for loose contacts, corrosion and breaks
- 3Use a multimeter to check that the wiring to the steering wheel switch has no open circuit
- 4If no fault is found, have a workshop replace the steering wheel switch (SWSR)
- 5If the fault remains after replacement, have a workshop check the steering wheel module (SWM)
- 6Reconnect the connectors properly, clear the fault code and check that the buttons work again
Symptoms you may notice3
- Radio controls on the steering wheel do not respond
- Phone controls on the steering wheel do not respond
- RTI controls on the steering wheel do not respond
General guidance for car owners. Diagnosis on the car can point to a different cause.