For 2003 Sonata Fourth generation facelift Hyundai recommends to use: H7 12V 55W PX26d, W5W-12V 5W W2.1x9.5d Longlife, C5W-12V 5W SV8.5 (11x35), W5W-12V 5W W2.1x9.5d, C10W-12V 10W SV8.5-8, P21W-12V 21W BA15s, P21/5W-12V 21/5W BAY15d, HB4 12V 51W P22d, PY21W-12V 21W BAU15s yellow, H1 12V 55W P14.5s, and WY5W-12V 5W W2.1x9.5d yellow. To select the right part or fluid see the table below.

in your garage to make future searches easy.

Condition Value
expand_moreFront light sources
expand_moreFog lamps
All other modifications HB4 12V 51W P22d
expand_moreFront direction indicator
White direction indicator lens PY21W-12V 21W BAU15s yellow
Yellow direction indicator lens P21W-12V 21W BA15s
expand_moreHigh beam
All other modifications H1 12V 55W P14.5s
Low beam H7 12V 55W PX26d
Parking light W5W-12V 5W W2.1x9.5d Longlife
expand_moreSide direction indicator
All other modifications WY5W-12V 5W W2.1x9.5d yellow
expand_moreInternal light sources
Boot light C5W-12V 5W SV8.5 (11x35)
Door light W5W-12V 5W W2.1x9.5d
Interior light C10W-12V 10W SV8.5-8
expand_moreRear light sources
Auxiliary brake light P21W-12V 21W BA15s
Back-up lamp P21W-12V 21W BA15s
License plate light W5W-12V 5W W2.1x9.5d
expand_moreRear direction indicator
All other modifications PY21W-12V 21W BAU15s yellow
Rear fog lamp P21W-12V 21W BA15s
Stop lamp P21/5W-12V 21/5W BAY15d
Tail light P21/5W-12V 21/5W BAY15d

Servicing your Hyundai use only recommended parts, oils, fluids and lubricants.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Hyundai Sonata user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Hyundai warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Hyundai Sonata service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2003 Hyundai Sonata you're not only saving money, but also also improving your technical skills and learning something new.

Hyundai Sonata Fourth generation facelift model years

Units:
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