Examples of acceptable condensation are:
•Presence of thin mist (no streaks, drip marks or droplets)
•Fine mist covers less than 50% of the lens
Examples of unacceptable moisture (usually caused by a lamp water
leak) are:
•Water puddle inside the lamp
•Large water droplets, drip marks or streaks present on the interior of
the lens
Take your vehicle to a dealer for service if any of the above conditions of
unacceptable moisture are present.
Using the right bulbs
Replacement bulbs are specified in the chart below. Headlamp bulbs
must be marked with an authorized “D.O.T.” for North America and an
“E” for Europe to ensure lamp performance, light brightness and pattern
and safe visibility. The correct bulbs will not damage the lamp assembly
or void the lamp assembly warranty and will provide quality bulb burn
time.
Function Number of bulbs Trade number
* Headlamp high beam 2 H7
* Headlamp low beam 2H11LL
(D3S [HID]
optional)
* Front park/turn signal lamp 2 3457AK (amber)
* Front supplemental park lamp 4 168 NA
* Rear sidemarker lamp N/A LED
* Stop/tail lamp N/A LED
Rear turn signal lamp 2 HPC24A
* Supplemental tail lamp N/A LED
Backup lamp 2 921
License plate lamp 2 C5WL
High-mount brake lamp 1 921
Fog lamp 2 H11
Front map lamp 2 12V6W
Rear dome/reading lamp 6 578
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2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
Function Number of bulbs Trade number
Glove box lamp 1 194
Visor vanity lamp - Slide on Rail
system (SOR)2 37 or 14V1CP
Puddle lamp 2 W5W
Luggage compartment lamp 1 578
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your authorized dealer.
* To replace these lamps - see your authorized dealer.
Replacing interior bulbs
Check the operation of all bulbs frequently.
Replacing exterior bulbs
Check the operation of all the bulbs frequently.
Replacing headlamp bulbs
High beam/low beam bulb replacement
For driver side replacement of the high beam/low beam bulbs, do the
following:
1. Make sure the headlamp switch is in the off position, then open the
hood.
2. Reach over the front bolster and remove the rubber bulb access cover
from the headlamp housing.
3. Remove the bulb socket by rotating it counterclockwise, then pull it
straight out of the lamp assembly.
4. Disconnect the electrical connector.
For passenger side replacement of the high beam bulb, see your
authorized dealer.
Lights
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2012 MKZ(378)
Owners Guide, 1st Printing
USA(fus)
