Important Information Manual
For more information related to Philips LED range, please contact us www.philips.com/support or contact your local representative. 
6 
•  Philips CeraLight technology (specific to LED-T10, for X-tremeUltinon LED range): using ceramic 
components for best heat dissipation management to ensure highest durability in extreme conditions.  
•  Philips SafeBeam technology: projects light exactly where you need it for your safety (no glare for 
oncoming racers). The Figure of Merit (FOM => light projected on the road) is in concordance with ECE 
R112. 
2.
Technical questions 
2.1.  How can I verify which LED to use to replace my old bulb? 
Simply use the section “Find the right lamp for your car” on the Philips website to find out which lamp type you 
need. Each type is communicated with the corresponding ECE name. Here below some examples in the comparison 
table between halogen and LED retrofit: 
Halogen type 
LED name 
H4 
LED-HL [≈H4] 
H7 
LED-HL [≈H7] 
H8/H11/H16 
LED-FOG [≈H8/H11/H16] 
Festoon T10,5x30mm 
LED-FEST [30mm] 
Festoon T10,5x38mm 
LED-FEST [38mm] 
Festoon T10,5x43mm 
LED-FEST [43mm] 
W5W 
LED-T10 [≈W5W] 
W16W 
LED-T16 [≈W16W] 
W21W 
LED-T20 [≈W21W] 
W21/5W 
LED-T20 [≈W21/5W] 
W21W 
LED-T20-RED [≈W21W] 
W21/5W 
LED-T20-RED [≈W21/5W] 
W21W 
LED-T20-AMBER [≈W21W] 
P21W 
LED-RED [≈P21W] 
P21W 
LED-AMBER [≈P21W] 
P21/5W 
LED-RED [≈P21/5W] 
- 
LED-CANbus [≈5W] 
- 
LED-CANbus [≈21W] 
2.2.  How to make sure my car can be equipped with LED retrofit? 
Not all the cars can be equipped with LED retrofit. At Philips, we have tested a variety of cars which are the most 
representative in the European market, and for which we are confident that our bulbs can used properly. 
2.3.  Is it mandatory to use a CANbus adapter while fitting LED? 
It’s strongly recommended to use a CANbus adapter to avoid either an excessive speed of the blinking or an error 
message on the dashboard. 
2.4.  What SMD or SMT means? 
It means a Single Mounted Device and Surface Mounted Technology. It refers to how the LED lamps is built and 
how the LED are used to diffuse the light within the optic.  










