Forum: 450 fortwo - Technical Queries

Don't hate me or think me an "abuser"... My smart is "technically" now overdue a service ( small one) a year having elapsed & at around 500 miles put on in 16 months I have to ask the question. Recently had a bust spring replaced in the garage when mot'd So yes, the spanner 🔧 icon is...

Afternoon all Apologies in advance for the long read, but as you'll see, I'm confused . . . . . . so I've found water under the front carpets of the Smart - which from what I've read isn't all that unusual - but what is unusual is how it's dispersed. The majority of the water is around the...

Hi everyone, my spare key fob isn't working so I changed the battery and still not working. I can get in by unlocking the boot manually but the immobiliser has been on and it won't start. (Used spare key for about a month but thought I should get it sorted incase anything happens to other one)...

My 450 CDI has had a replacement turbo, EGR valve and a new exhaust fitted but it is not making any boost whatsoever and I can't figure out why this might be. The actuator seems a bit stiff but apart from that, the car does appear to be running normally but severely lacking in power, meaning ~55mph...

Just been trying to swap my normal Smart 450 door card/pockets over with nicer Brabus ones, and the fittings are slightly different. The outline of the things is the same and all the other fixings fit, except the ones in the photo. Anybody come across this issue before? Just wondering the best...

Mysterious gear selection problem: Car sometimes won’t go into 1st, or reverse gear and stays resolutely in neutral. Initial thought is, of course it’s the clutch actuator, but the car starts - no 3 lines on the dash. I’ve recently rebuilt the engine and so I checked and greased the clutch...

I’ve been tidying up a wee bit and found in my shed six litres of synthetic oil from 1984. At that time synthetic oil was rather expensive and I only used this oil for winter. Drained it early May and replaced with standard mineral oil. I wonder if this old oil now is still safe to use. From...

Looks like my jets are completely blocked, gunk is coming out, tried poking with needle but does not help. Can the jet mount be removed without taking off front of car ? Thanks

My driving style utilises the auto function. I'm gentle on the, accelerator allowing gear changes without forced acceleration (as I feel the clutch is not that good.) There has been a noticeable pattern to the stalling/ power loss issue which is typically at a low speed and RPM. Either shortly...

Does anyone know the correct paint code for alloy wheels on the 450? Thanks.

Are they just that crashy? Ours seem to just crash I to every speed bump and pot hole! Or are the dampers/springs on ours goosed? Ta!

The power steering becomes really stiff once in motion but is great when, parking and rolling from start. Is this a simple case of the motor? Brabus 2004-5 74bhp

The starter whirls the engine around but it's not firing. Has a 4-5 sec. cycle once the key is in Pos. 2 then try again turn the, key. Usually this occurs and by the third of fourth attempt the engine will start. I've removed the valve and fuel is in the system. The plugs and ignition cables...