If you are doing any electrical work on your 451 ED, you really should disable the high voltage battery. This is easily done. Make sure the car is turned off before disabling the HV battery. Look underneath the dashboard, next to the fuse box. See the red plug, pull...
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451 ED Onboard Charger
I'd been driving my 2013 451 ED for over 4 years with very few issues. Once a year it would cut out but restart with no issues immediately. The error code was about the contractors and they were quite loud when they closed. Then in Q3 2022 I started getting a warning...
453 Wiper Mechanism Removal
Remove the bonnet and remove the scuttle panel and scuttle bucket. Underneath the removed scuttle panel and scuttle bucket is the wiper mechanism. Remove the 4x 10mm bolts, lift the assembly from the car and disconnect the electrical connection. Right Hand Drive Left...
450 600cc Steering Wheel Info
Can I Use a 700cc Smart Fortwo Steering Wheel On A 600cc Smart Fortwo? Yes. Will The Paddles Work? No. Can I Use a Smart Roadster Steering Wheel On A 600cc Smart Fortwo? Yes. Will The Paddles Work? No. Can I Use a 600cc Smart Fortwo Steering Wheel On A 700cc Smart...
Roadster Air Filter Change
You will need a screwdriver to aid removal of the air box lid. Open up the rear of the car, lift the carpet and take off the engine bay lid. Using the screwdriver flip back the 4 clips as circled above. Due to the clearance it isn't very easy to get the lid out of the...
Roadster Clutch Actuator Servicing
Originally there were 3 options to fixing a slipping/badly adjusted clutch. Have the clutch actuator retaught on a star machine. If that couldn't be done as the machine bought up errors, New clutch actuator fitted. This was the option given to me at smart. If that...
451 CDI Exhaust Removal
45bhp Diesel Exhaust Remove the rear panels and the crash bar to get good access to the exhaust. Disconnect the breather pipe by squeezing the hose clamp with pliers... ...and pulling the pipe off. You have 2 options regarding the lambda sensor. If you are fitting a...
451 CDI Turbo Removal
The 45bhp diesel turbo and the 54bhp diesel turbo is the same unit. The only difference is the way that the wastegate is controlled. The 45bhp wastegate is boost controlled and the 54bhp wastegate is vacuum controlled. Once you've removed the rear panels, crash bar...
450 Door Catch Removal
Remove the exterior door handle and exterior door panel. Remove the 3x Torx45 bolts. Disconnect the 2 electrical connection from underneath. Clean them up with electrical contact cleaner as they tend to corrode. Cut the cable tie that holds another electrical...
450 Lower Fuse Box Pin Out
The lower fuse box is ONLY found on the 450 fortwo with the 600cc petrol and 800cc engine built between 1998 and December 2002. It's located under the carpet, under the seat on the nearside of the car. You don't have to remove the seat but it does make things...
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451 Lambda Sensor Removal
Euro 4 Lambda Exhaust Remove the rear panels and the crash bar. Spray both lambda sensors with PlusGas before attempting to remove with a 22mm spanner. The upstream sensor in in the upper elbow. The 2nd is in the silencer. This uses the same 22mm spanner. Disconnect...
453 Error Code P26AB
In 2019, an error code started being mentioned on various forums for the 453 model. In the subsequent years since this I have only ever heard of it happen on US cars so my assumption is that the failed part is a US only fixture. P26AB This is a generic error code but...
451 Xenon HID Headlights
OK dumb-arse, pay attention. It is not road legal in any country to put a xenon bulb (or LED bulb) in a standard headlight designed to use a halogen bulb. However, in most countries, it's a bit of a grey area if you replace the projector with one actually designed to...
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...
CDI Inlet Manifold Removal
This is very similar for the 450 CDI and both models of 451 Diesel. This is for a 45bhp 451 CDI which is almost the same as the 450 CDI. The 54bhp CDI has a throttle body connected to the left side of the inlet manifold. The air inlet manifold is held to the engine...
R-Link Start Up Logo
When the TomTom R-Link touch screen stereo starts up, it'll show the smart logo. This can be changed to 1 of 37 options. Very few of them would make any sense but it's up to you if you want to change it. Changing The Start Up Logo Launch DDT4All on your computer and...
451 Clutch Actuator Testing
Bench Testing The 451 Clutch Actuator Pin Wire colour in photo Function 1 Brown/Grey 0V 2 Blue/Yellow Channel A 3 Red/Green Motor 1 4 Grey/Violet Channel B 5 White/Yellow +5V 6 Violet/White Motor 2 Testing The Motor And Mechanics Service the mechanics of the...
Roadster Brabus Skirt Fitting
Remove the old side skirts. They should just pull out to unclip. They are 2 parts per side. To mount Brabus side skirts to your Roadster, you need the hangers. These are the front hangers. Smart part numbers: Q0015876V001000000 Q0015878V001000000 Take out the Torx...
453 Android Stereo
Whenever anyone on the forums asks about a new stereo on the 453, people will always recommend the nameless Chinese made 9 inch Android stereo that's available all over AliExpress and similar China based e-commerce sites. They all look the same so I suspect they are...