How to remove the 451 upper grill and lower mesh
Smartmods
for all your modding needs, recommended by Evilution
Kane Harrison
451 Handle Removal
The handle is removed or loosened to aid the removal of the door panel or to gain access to the bowden cables that operate the door catch.
451 Hatch Not Closing
Your 451 glass hatch won't latch closed, it just springs back open. There are 4 parts to this mechanism. The main catch is what grabs the loop on the glass hatch as you close it. Spray some penetrating lubricant into the mechanism and manipulate the latch back and...
451 Headlight Bulb Change
How to change all of the headlight bulbs on a new smart fortwo (451).
451 Headlight Disassembly
Strip the headlights down to spray the reflectors or add angel eyes.
451 Headlight Pin Out
Nearside Headlight 6. 5. 4 3. 2. 1. Pin Number Wire Colours Function 1 Brown Headlight Adjuster Ground 2 Green/Red Headlight Adjuster Data 3 Grey/Yellow Low Beam & Headlight Adjuster + 4 Black/White Indicator 5 Brown Bulb Ground 6 White/Red High Beam ...
451 Headlight Projector Fault
The Headlight Aims Down And Won't Adjust Up This is very common on the 451 fortwo. The projector becomes loose inside the headlight and because the front of the projector lens is the heaviest part, the dipped beam will aim too far down and no amount of adjustment will...
451 Headlight Removal
Remove the headlights to spray the reflectors or to add angel eyes or HIDs.
451 Heated Seat Retrofit
There is an easy way and a less easy way to retrofit heatet seats to your 451. It really depends on the year your smart was made. From around 2008 to 2011, smart started to include all the wiring for the heated seats so all you have to do is plug in a few things....
451 Heated Seat Wiring
Key:
E = Earth
C4/8 = Connection plug 4, pin 8
Fuse* or F* = Direct connection fuse number
Black Yellow = Wire colour
Modules are labeled in the picture.
451 Heater Blower Failure
For some unknown reason, the America cabin heater blower fan fails. I have yet to see this happen outside of the US.
451 Heater Controller Disassembly
Heater Controller This is the last and hardest part to change the LEDs on because it's awkward to open. Remove the heater controller by following the 1st part of this guide. Set the fan speed to setting 2 and the heat to setting 22. (This lines up internal tabs). Look...
451 Heater Controller Fix
If you are having heater or climate controls issues as mentioned here, site viewer Shaun L reckons he's found the issue. If he's correct, it's a fairly easy fix. This is the potentiometer (pot) that moves with the temperature selector inside the heater controller....
451 Heater Controller LEDs
How to change the SMD LEDs in the 451 heater controller
451 Heater Fan Brushes
451 Heater Motor Brushes For some reason, it's mainly the American 451s that suffer with brush problems. Dunno why but it does affect non Americans as well. The standard brushes seem low quality and seem to wear very quickly. Probably because the commutator gets a...
451 Heater Faults
Hot or cold. No warm
451 Heater Resistor Pack
How to remove and change the 451 heater resistor pack
451 High Level Brake Light
Changing the bulbs in the high level brake light assembly.
451 High Pressure Fuel Pump
Highlighted below is the high pressure fuel pump. It's fed by the low pressure fuel pump in the fuel tank and is spun by the cam shaft. However, to get to this point you have to remove the airbox, intercooler and gear change motor. Disconnect the pipe highlighted...
451 Horn Not Working
It has taken 10 years for this issue to appear but I knew it would eventually occur. When I looked at the 451 wheel back in 2007 I could see a weak point in the system. I'm sure it'll soon become a common problem. Smart knew it'd be a problem as they changed the...