20 Most Recent 2003 Ford Focus - Page 5 Questions & Answers


Before testing the headlight switch, check for a defective general electronics module (GEM) and 15A FUSE 32 in the central junction box (CJB). These components could be the source of exterior lighting problems.

2003 Ford Focus | Answered on Nov 03, 2016


Transmission can suddenly 'grab' when it/you changes gear. An automatic transmission can be sluggish to change gear if the fluid is dirty and needs changing. A worn/slipping clutch on a manual transmission causes the engine to rev high before the car picks up speed.

From your description it sounds as though there's a misfire or rough running with the engine which causes the jerking, not the transmission unit.

There's many things that can cause the symptoms you describe - the MAF sensor .. fuel starvation .. O2 sensor ..

Get a good mobile mechanic to look at your car - or take it to a workshop. I don't think it's your transmission at fault.

2003 Ford Focus | Answered on Oct 23, 2016


This is off an 03 ST hatch but pretty sure it's in the same location.
Good luck
10_10_2016_7_47_42_pm.jpg

2003 Ford Focus | Answered on Oct 14, 2016


Start with cleaning the throttle body, idle air control motor, and MAF sensor. After that, tune up.

2003 Ford Focus | Answered on Sep 24, 2016


most likely a problem starter motor or starter relay
take it to an accredited auto electrician and have it checked out

2003 Ford Focus | Answered on Sep 23, 2016


Yes they do unless the car is been sitting there for a long time then the motor would be stuck making it very hard or imposible to turn the crackshaft

2003 Ford Focus | Answered on Sep 23, 2016


Check the owner's manual for all fuse and relay locations, but there is no such relay for the headlights, the dimmer switch is likely the problem. Have it diagnosed electrically.

2003 Ford Focus | Answered on Sep 20, 2016


Assuming you Focus does not have DRL, setting the light switch to low beam energizes the low beam relay in the battery junction box, sending power through 10A FUSE 16 (L) and FUSE 17 (R) to the headlamp low beam elements

2003 Ford Focus | Answered on Sep 19, 2016


When does this happen?

2003 Ford Focus | Answered on Sep 13, 2016


If you brake lights stay on and the cruise control doesn't work then I would be looking at the brake light switch at the top of the brake pedal as if there is power passing through it then it cuts out the cruise control. The same as if you put your foot on the brake cuts out the cruise control. The hatch button will be another problem like a fuse or broken cable or failed latch solenoid. As to the rear middle brake light try checking the bulb first.

2003 Ford Focus | Answered on Sep 07, 2016


Try code 4678 (Ford until 2006).

2003 Ford Focus | Answered on Sep 02, 2016


Alexander, Normally you contact the dealer with the radios serial # and they can give you code to be input/programmed into radio. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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2003 Ford Focus | Answered on Aug 21, 2016


Here's the link and I'm sure you will get the solution of your problem
Ford Focus 2000 2007 Factory Workshop Service Manual

2003 Ford Focus | Answered on Jul 12, 2016


There isn't one ! This vehicle relies on serial data communication . The PCM sends an message on the data bus to the microprocessor inside the instrument cluster . The PCM controls the operation of the charging system warning indicator in the instrument cluster. The PCM is therefore responsible for turning the warning indicator off after the engine is started and illuminating it under fault conditions (when the generator is not generating the correct amount of current with the engine running). The warning indicator will also be illuminated by the PCM at key ON engine OFF, and stall conditions.
Charging System Warning Indicator
The instrument cluster receives the charging system status from the PCM over the SCP or CAN communication network. The PCM controls the charging system and the charging system warning indicator. The PCM is therefore responsible for turning the lamp off once the system is running and illuminating it under fault conditions (including stall conditions).
How to Diagnose Controller Area Network CAN Your best bet would be to take your vehicle to a qualified repair shop .

2003 Ford Focus | Answered on Jun 23, 2016


Its called a flasher you may have two one for hazard and other for signal,i would first check all signal bulbs before replacing flasher due to the fact that flashers can last well over 10 years without a problem

2003 Ford Focus | Answered on Jun 21, 2016


There is no relay, according to my info. At the blower motor, green wire is voltage, fuse protected, goes hot with key on. Black wire is ground. The blower speed control switch is part of ground circuit. There are resistors for the lower speeds. Hi speed doesn't use a resistor. If you have good voltage and ground at blower motor and no blower action, suspect the blower motor. Any motor that uses brushes, sometimes you can tap on suspect motor, and it will run intermittently. Sign of bad brushes.
You may be able to use jumper wires to blower motor connector for voltage and ground, from the battery, just to see if blower motor will run? If it won't run, suspect blower motor. If you use jumpers, use an inline fuse, just in case.

2003 Ford Focus | Answered on Jun 15, 2016

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