Remove the spark plugs and air inlet manifold to reveal the crusty and corroded rocker cover. Use an E10 socket to remove the 6 bolts holding it down. One of this bolts also holds the oil dip stick tube in position. Pull off the large rubber breather hose from the TIK...
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Roadster Air Inlet Manifold Removal
The air inlet manifold is the black plastic part on the top of the engine that has "Smart - Powered By Mercedes Benz" ruining the top and making idiots think their car is a Mercedes. Remove the HT leads from the top spark plugs. Disconnect the fuel tank breather pipe...
450 Air Inlet Manifold Removal
The air inlet manifold is the black plastic part on the top of the engine that has "Smart - Powered By Mercedes Benz" ruining the top and making idiots think their car is a Mercedes. Pull the HT leads from the top spark plugs. Disconnect the fuel tank breather pipe by...
Roadster Self Centring Steering
Problem Some people complain about the numb steering feel and the poor self centring of the steering wheel on a smart Roadster equipped with power steering. Personally I've never experienced this. The 2 Roadsters I had felt very direct in the steering and the wheel...
453 EQ Desiccant Cartridge
What Is A Desiccant Cartridge? Electric doesn't like water but high power batteries and water can cause serious issues. A desiccant cartridge pulls all of the water out of the air inside the battery. This reduction in humidity stops the formation of condensation...
453 Forfour Speaker Change
This page covers the removal and replacement of better speakers in both the front and rear doors of the 453 Forfour. Forfour Speaker Change - Front Doors The old speakers are cheap and not very good. Remove the internal door card. Click here. The speaker is held in...
453 Forfour Door Card Removal
This page covers the removal of both the front and rear door cards. Front Door Cards This is the front door card on the Forfour. Firstly we need to pop off the mirror covers. Get a plastic prying tool or spudger. Lever it out slightly and look down the back, press in...
453 Lambda Sensors
Non Turbo B90 Position Number Of Wires Bandwidth Part Number Upstream (manifold) 5 Wideband A453 542 05 00 DownStream (catalytic convertor) 4 Narrowband A453 542 06 00 Turbo B91 Position Number Of Wires Bandwidth Part Number Upstream (turbo) 5 Wideband A453 542 05 00...
453 Hand Brake Adjustment
If your handbrake lifts up too high, it can run out of travel before it properly applies the rear brakes. Thankfully it's easy to adjust and a better option that the problematic auto-adjusters in the previous models. With the handbrake raised, look underneath the...
453 Rear Light Pin Out
Right Hand PIN number Wire Colours Function Connects To 1 Green Reverse Light N10/10 S1 Pin 40 2 Pink Fog Light N10/11 Pin 4 3 Black/Brown Ground Earth Point W51/14 4 Pink/Brown Indicator N10/10 P1 Pin 12 5 Blue Tail Light N10/11 S2 Pin 11 6 Pink Brake Light N10/11...
The Dan Graves CD
Now this is a story all about how my life got flipped, turn upside down. I'd like to take a minute just sit right there, I'll tell you how I got scammed by some Yankee bell end. Some time ago, I'm guessing it was 2007, maybe 2008. I was contacted by Dan Graves from...
453 Bonnet Lock
Despite being in the manual, very few people know that you can lock the bonnet/hood on the 453. Look at the front of the car, over to the nearside, you'll see a hole. Put your key into the hole (it won't go in very far) and use the key to lever this cover out. It can...
451 Boot Switch Faults
The 451 boot release switch is problematic and will slowly become a common problem. These issues come in 3 forms. 1 - Broken Mechanism 2 - Faulty Switch 3 - Damaged Wiring 1 - Broken Mechanism The actual switch is fine and well hidden. For the number of times you open...
Side Wind Issues
Story Time I drive down the A13 into London every night. There's a section between the M25 and Ford's car plant that has nothing but flat fields on each side. At times, the side winds along that stretch are incredibly dangerous. I have been suddenly blown over 2 lanes...
453 Speedo LED Change
The LEDs in the 453 speedo are very common. You have 2 types. The main type being the PLCC-2 in various colours. I have used a red sharpie to highlight the notch in the package. This tells you which way around the replacement LED has to be soldered in. As you probably...
453 Speedo Disassembly
Remove the speedo. There are 6 of these clips around the outside of the speedo. They are very easy to unclip using a screwdriver. 2 clips on the top on each side... ...and 2 clips on the bottom. Pull the rear plastic cover from the speedo. Turn the speedo with the...
453 Speedo Removal
Remove the radio and pull off the decorative dashboard trim either side of the speedo. Either side of the speedo cowl are Torx 20 screws, remove them... ...and the Torx screw on the top. Lift the cowl upwards... ...to reveal another 2 screws, 1 on each side. Again,...
450 Fuel Pump Removal
Lower the tank and look on top. That's the top of the pump with the fuel out, fuel return and tank breather pipes. Just in front of that is the electrical connector. Disconnect the electrical connector by lifting the top tab and sliding the connector sideways....
450 Fuel Tank Removal
Remove the under tray to reveal the fuel tank. This is the smaller 22 litre tank but the later model had a larger 33 litre tank. Removal is the same but there are a few more fixings to remove. Drain as much fuel from the tank as you can. If you don't, the tank could...
453 Coolant Specs
Smart 453 Petrol Pre-Mixed Coolant (MB326.6) Product Name Manufacturer ALLIANCE PRIMECOOL GP P-40 Mercedes-Benz Pty. Ltd. /Australia, Victoria, Mulgrave/AUSTRALIA Antigel YORK 813 MOTOREX AG, Langenthal/Schweiz AVIATICON Finkofreeze F40 RM 50:50 Finke Mineralölwerk...