This is an old LHD 450, before the RHD was even available. It'll be similar on a RHD 450 but without the steering column in the way. Post yourself into the nearside footwell and look up and towards the centre of the car. There's the fan unit. Disconnect the electrical...
Kane Harrison
450 Heater Knob Snapped
You don't get to see most of what is going on behind the heater knobs. Here's what you see normally. This is what is going on behind the covers. When one of your heater sliders snaps because you're a cack-handed caveman, getting the broken part out is an absolutely...
450 Heater Lighting
The heater symbols should light up, so if they don't, you need a new bulb.
450 Heater 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.
450 High Level Brake Light
Changing the bulbs in the high level brake light assembly.
450 Horn Fault



Some dick head cuts you up, you go to show your displeasure with a sound of the horn and it doesn't work
450 Horn 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.
450 Hub Ball Joint Change
The first thing most people hear about ball joints is when you fail the MOT because of a worn ball joint or split rubber boot.
450 Ignition Barrel Removal
Not many reasons to remove the ignition barrel but here it is just in case.
450 Indicator 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.
450 Installing Interior LEDs And Bulbs
Brighten up your interior and add a bit of colour
450 Interior Colour
Is My Interior Plastic Grey Or Blue? Yes, this is a serious question that I have received a few times every year. I don't think it stems from people not being able to tell the difference between grey and blue, I believe it's to do with the poor quality of some photos...
450 Interior Handle Cable
If your internal door release suddenly decides to go all sticky one day, jam you in the car, stick open so you can’t close the door because the latch won’t re-lock, generally point itself at the inside of the car instead of flipping back flush to the door trim, then...
450 Interior Lights 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.
450 Key Fob Battery
Batteries don't last forever so instead of getting locked out of your car, let's change the battery for a fresh one.
450 Keys Stopped Working
Both Keys Don't Work When I say "don't work", I mean nothing. Not even the indicators flashing 9 times. Sometimes both keys will be temperamental but both will either not work at all or work OK. Firstly, check that both key batteries are OK by fitting new ones (not...
450 Lambda Sensors
The Lambda (O2) sensor is by far the most common fault that brings up the engine fault light.
450 Larger Oil Sump Pan
More Oil, More Better OK, the grammar is terrible but facts are there. The more oil your engine has available, the slower it will degrade. Now, I'm not saying to put more oil in your engine, that'd be terrible. What we need is a bigger sump. Bigger Sump, Bigger Cost?...
450 Leaks
A round up of what faults cause water ingress into a 450
450 Lower Fuse Box Cleaning
Secondary Fuse Box The 600cc smart fortwo (or city-coupe and city-cabrio as it was called back then) had a ZEE unit under the dash instead of the SAM unit as found on the 700cc fortwo. The ZEE unit didn't have many fuses or relays so smart added an extra fuse and...