IGNITION SWITCH MALFUNCTIONING. WHEN YOU INSERT THE KEY, WHICH IS AN ELECTRONIC KEY THE MESSAGE DISPLAY WILL DISPLAY "KEY ERROR TRY AGAIN." WHEN THIS HAPPENS THE CAR WILL NOT START AT ALL. THUS FAR REPEATEDLY JIGGLING THE KEY FOB WHILE IN THE SWITCH, AND/OR TURNING ON/OFF MULTIPLE TIMES GETS THE SYSTEM TO EVENTUALLY RECOGNIZE THE KEY. THERE ARE 2 KEYS TO MY CAR AND THIS HAPPENS WITH BOTH KEYS, SO …
2005 Volvo S40 electrical problems
moderate 17 complaints filed with NHTSA · avg repair $850
Complaints
17
Recalls
0
Crashes
0
Avg fix
$850
What owners are reporting 2 most recent
THE STARTER CONTROL UNIT (SCU) ON MY 2005 VOLVO S40 HAS CEASED TO FUNCTION TWICE IN THE 5 YEARS THAT I'VE HAD IT (50,000 MILES). ESSENTIALLY, THIS MEANS THAT THE SCU DOES NOT READ THE KEY (THE CAR TELLS ME I HAVE A "KEY ERROR"), AND THEREFORE THE CAR SHUTS DOWN COMPLETELY AND DOES NOT TURN ON (THE STEERING LOCKS, THE CAR DOES NOT START, IT IS UNUSABLE). THE FIRST TIME IT HAPPENED, IT WAS UNDER W…
Common questions
How serious is the electrical problem on the 2005 Volvo S40?
It's a documented issue but not catastrophic. 17 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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