Water intrusion into a connector (X309) located under the cab, beneath the driver's seat, can cause a rough idle, erratic speedometer operation, ABS Light and Check Engine Light illumination, and automatic transmission shifting problems. If needed, connector repair parts are available from Mazda dealers, and possibly some Ford dealers.
Resources for the Repair and Maintenance of your 2009 Mazda B4000
2009 Mazda B4000
2009 Mazda B4000 Problems
If the engine cranks but does not start, it may be caused by a tripped inertia switch. Switch the key to "ON" and the fuel pump should be heard running for a second or two. Listen at the gas filler if necessary. The inertia switch is located on the firewall and can be tripped when the parking brake is set too hard and then released. The inertia switch should be reset, and will click when it is reset.
The engine may fail to start due to an electrically shorted sensor. Some of the sensors may internally short and not blow any fuses. A technician may find no spark and no operation of the fuel injectors in the diagnosis. One way a technician may isolate the defective sensor is by disconnecting sensors one by one to see if the engine starts.
A dirty, or contaminated mass airflow sensor (MAF) can cause the engine to run poorly. The Check Engine Light may or may not illuminate. MAF sensor related fault codes P0102 and/or P0103 may be stored. In some cases, carefully cleaning the sensor element will fix the problem. If not, replacement of the sensor may be required.
2009 Mazda B4000 Recalls (Recent)
RepairPal Expert Overview:
The front spindle stem may crack due to a manufacturing defect. If the spindle stem fractures, the wheel may come off the axle. Steering may be compromised, increasing the risk of a crash. The recall began on February 9, 2009. The Mazda recall number is 5109A.
2009 Mazda B4000 Questions and Answers
There is very little heat coming to the cabin.