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Electrical systemPart report

2003 Mazda B-Series Truck Electrical system Problems

Complaints
4about this part
Share
19%of 21 total for the year
Median mileage
31,880miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the electrical system of the 2003 Mazda B-Series Truck, 19% of the 21 complaints for this model year. Where a mileage was given, the median is 31,880 miles. 1 a fire, according to the filers.

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.

“The electrical system shut down while I was driving, turning off air conditioner, radio, interior lights, and turn indicator. The dash lit up ABS, airbag, and cruise control indicators. When I stopped, I turned off the engine and turned the key to power without starting engine and found the electrical working again. I tried driving again and the electrical system worked for a short time and went off again. When it first happened, I was driving straight on a city street”

NHTSA complaint #11113986, filed 2018-07, 98,000 miles

“12/07/05 engine died on 4 lane hwy, 42 miles from home in rush hour traffic. Towed to dealer, who two days later stated problem was fuel pump relay, and it was fixed. 01/25/05 truck died in intersection at 4:30 p.m. Husband taped wires and wire-tied connector to relay. Dealer ordered fuel cut-off switch 01/27/05 and did not install until 02/03/06, because waiting for part. Dealer relocated the relay from floor board to behind the passenger kick panel and wire-tied the connector to the relay and swore this would solve problem. On 02/10/06 the engine died at 1:00 p.m., 50 miles from home. …”

NHTSA complaint #10150060, filed 2006-02, 31,880 miles

“My truck sat for a while I charged the Batt. I drove to the landfill in Tehachapi Ca. It ran fine. I unloaded the trash the engine idled for 30+min. The landfill had debris on the ground. The truck ran fine back to town. I had 3/4 fuel. I decided to fill up at the Loves gas station I filled it all the way 2 clicks I think. I started up the truck after fueling it ran terribly I had a flashing check engine light. I drove home 2milles when home the truck was on 🔥 FIRE!! I turned off engine. Put lots of h20 on fire. Disconnected Batt put more h20. …”

NHTSA complaint #11567241, filed 2024-01

“The contact owns a 2003 Mazda B-Series Truck. The contact stated that the ignition switch failed intermittently. The contact mentioned that a neutral safety switch was installed and the failure progressed. The manufacturer was not notified of the failure. The failure mileage was approximately 31,777. The VIN was not provided.”

NHTSA complaint #10861183, filed 2016-04, 31,777 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2003419%
200113%
200023%
199956%
199834%
199736%
199612%
1995410%
19941311%
1993333%
1991214%

Other parts of the 2003 Mazda B-Series Truck

Air bags
3 complaintsFuel system
3 complaintsTransmission and drivetrain
3 complaintsExterior lighting
2 complaintsOther or unknown
2 complaintsTires
2 complaintsBrakes
1 complaintsSteering
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2003 Mazda B-Series Truck

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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