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Electrical systemPart report

2004 Mercedes-Benz S430 Electrical system Problems

Complaints
7about this part
Share
39%of 18 total for the year
Median mileage
99,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the electrical system of the 2004 Mercedes-Benz S430, 39% of the 18 complaints for this model year. Where a mileage was given, the median is 99,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“My instrument control panel backlighting experienced an electrical malfunction resulting in the failure to illuminate the gauges. The condition was diagnosed by my independent mechanic on 06/06/16. In doing so he informed me of recall campaign number 06v-028. I was told that the remedy is for the manufacturer to replace the cluster module free of charge and that I would need to call mercedes benz corporate to schedule a replacement. I called mercedes and spoke with eric at ext 7806 without any satisfaction at all. …”

NHTSA complaint #10874041, filed 2016-06, 90 miles

“I purchased a certified pre-owned 2004 mercedes benz S430-4matic in march 2007, after retiring. I also brought an extended warranty costing over $3000 dollars. I have returned this vehicle to a mercedes benz dealership for repairs over approximately 27 times since purchasing the vehicle. The problems include the electrical system (door locks); trunk lid lock, suspension system, tire pressure sensors, engine and engine cooling system (air conditioning system will only dispense cold air at 55 degrees and lower) and most recently the radio and navigation system are failing. …”

NHTSA complaint #10534935, filed 2013-08, 29,066 miles

“This vehicle often drops lower, while in motion. This is hazardous! I have had this airmatic air suspension system repaired three times on this vehicle within the last three years, and it appears this is one problem that mercedes benz refuses to correct. In my last S430, I had the same issue, and had to pay huge amounts to fix the problems. I feel no one is doing anything to get mercedes benz to fix this ongoing safety issue. I will like NHTSA to get mercedes benz to take responsibility for these ongoing defects.”

NHTSA complaint #10883158, filed 2016-07

“The contact owns a 2004 Mercedes-Benz S430. The contact stated that the electric conductor from the blower motor to the fuse holder overheated and melted the fuse. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The VIN was not included in NHTSA Campaign Number: 04V227000 (Electrical System). The manufacturer was not notified of the failure. The failure mileage was 78,000.”

NHTSA complaint #11480019, filed 2022-08, 78,000 miles

“The contact owns a 2004 Mercedes-Benz S430. While starting the vehicle, the instrument cluster did not illuminate and the screen was dark. The local dealer was not contacted. The manufacturer was notified and informed the contact that the VIN was not included in a recall. The failure mileage was 175,000.”

NHTSA complaint #11029984, filed 2017-09, 175,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2006650%
2005764%
2004739%
20031246%
20022065%
20013751%
20001461%

Other parts of the 2004 Mercedes-Benz S430

Suspension
4 complaints
Transmission and drivetrain
4 complaints
Body and structure
2 complaints
Vehicle speed control
2 complaints
Brakes
1 complaints
Electronic stability control
1 complaints
Engine
1 complaints
Exterior lighting
1 complaints
Fuel system
1 complaints
Latches, locks and linkages
1 complaints
Other or unknown
1 complaints
Steering
1 complaints

← All problems reported for the 2004 Mercedes-Benz S430

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology