My partner told me that his passenger headlight was burned out and that he was told it was going to be over $800 to replace. I decided to try to replace the bulb myself, but I found that the insulation on the electrical harness leading the headlight connectors had deteriorated to the point that the wires are bare, causing electrical shorting, equipment failure, leading to potential electrical…
2008 Mercedes-Benz CLK-Class electrical problems
severe 5 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
5
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 5 electrical complaints filed for the 2008 Mercedes-Benz CLK-Class, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA electrical complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
What owners are reporting 5 most recent
My wife told me her headlight was burned out. When I replaced the bulb, I found the insulation on the electrical harness and headlights is deteriorating leaving exposed bare wires causing electrical shorting, equipment failures, electrical fires, leading to potentially serious life threatening accidents. Mercedes benz is not supplying a fix as reported by multiple owners. Also extended warranty…
Tl* the contact owns a 2008 Mercedes-benz clk350. While the vehicle was stationary, the air bag indicator illuminated without warning and "check SRS air bag" displayed on the instrument panel. The vehicle was taken to an independent mechanic where the wiring for both the driver and passenger seats were replaced. The failure recurred. A dealer and the manufacturer were not made aware of the…
The brake light on the trunk simply fell off. I have searched the internet and have found that there are at least 50 other owners that have experienced the same problem. This does not include those that simply just went ahead and got it fixed without posting it. This is a defect where the red lens separates from the light housing and the brake light no longer shows red when braking. I also…
On 12/31/2017 my car was parked on drive way of 800 villa florence dr. Naples florida and without any prior sign of trouble car cut in fire from left side of trunk. There was nothing in trunk of this car except to light weight beach chairs.
Had electrical trouble with your 2008 Mercedes-Benz CLK-Class?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2008 Mercedes-Benz CLK-Class?
It's a meaningful issue. 5 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Based on the 5 complaints filed, electrical issues most often appear around 58,333 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2008/Mercedes-Benz/CLK-Class.
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. Some links on this page are affiliate links.