Wiring Problems of Volvo S40

Volvo S40 owners have reported 5 problems related to wiring (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Volvo S40 based on all problems reported for the S40.

1 Wiring problem of the 2009 Volvo S40

Failure Date: 12/03/2018

Headlight wiring- made an attempt to change light bulbs for headlamps. Covering around electrical wiring harness which connect to headlight crumbled in my hands and electrical wiring is exposed. Worries that this may be potential fire hazard to my vehicle and myself. My vehicle was stationary in my driveway.

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2 Wiring problem of the 2011 Volvo S40

Failure Date: 01/20/2016

A cold, wet, wintery morning; pulled into coffee shop parking lot, parked car, turned engine off, removed key, got out of the car, locked doors, went into the coffee shop. The car was stationary, nothing left on in the car. While waiting for coffee glanced out coffee shop window. Saw that the car was filled with smoke. A panic rush to car found a fire was burning behind dash. Coffee shop had a fire extinguisher; the fire was put out. The car, inoperative, was towed to a dealer. An opinion is that a manufacturing defect involving the car¿s cem (central electronic module) under the dash, on the passenger¿s side, was likely the cause and source of the fire. Dealer report; engine & dash wiring, cem, heater housing, airbag, inner glove box to replace.

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3 Wiring problem of the 2006 Volvo S40

Failure Date: 04/13/2015

We had been experiencing rain showers on the way to work the Volvo twice had all the lights on the dash board light up but the car did not stall. I was afraid the air bag might deploy. As soon as I got home I had my husband check to see if he could locate the problem. He found was that the carpet was soaked on the drivers side . And the. Wiring running under the carpet was also wet. We have not moved the car and are trying to dry everything. It has also continued to rain off and on. My husband has found some information on the internet which could be related to this problem and will try to see if this might be the solution to our problem.

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4 Wiring problem of the 2005 Volvo S40

Failure Date: 12/15/2011

Often, the headlamps bulbs fail, after a few years changing bulbs, I found out that due to contact between detachment of the wiring harness cover is the cause of the failiure bulbs in right and left headlamps. The wiring harness instaled by the manufacturer do not resist voltage and heat.

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5 Wiring problem of the 2002 Volvo S40

Failure Date: 02/02/2007

- the contact stated that while attempting to drive the 2002 Volvo S40 he turned the key in the ignition and a thick black smoke came from the front driver side door panel and filled the interior of the vehicle immediately. The contact turned the vehicle off and exited the vehicle. The vehicle was taken to a Volvo dealer and they could not find the cause of the smoke. The current and failure mileage were 30,000.

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Other Common Electrical System related problems of Volvo S40



Safety Ratings of S40 Cars
Fuel Economy of S40 Vehicles
S40 Service Bulletins
S40 Safety Recalls
S40 Defect Investigations