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If it's the same as the Avensis, if your on a decline, it won't slow you down and you have to take your foot of the accelerator or use the brakes to get you below or at whatever speed you've set. The speed on the display also contrast inverts, to let you know that your above whatever speed you've set. It's not the best system out there but it works and is handy if your watching the points on your licence, especially with the average speed cameras.

I sent my email to Toyota on 14th June - nothing yet! So I emailed TFL and said I was having a hard time getting the Certificate of Conformity, would the V5 do? They phoned me today and said yes, so my application is on its way to them with a note about the conversation.

Both my front doors were replaced in guarantee for this problem and the doors and check straps were modified in I think 2012 because of this problem.

Done all my own servicing on my iQ3 since I bought the car at 2 years old. It is an earlier model that only had the 3 year warranty on it so when it got to three years old, I simply did the service myself. I change the oil and filter every year getting the filter from the local Toyota dealer. They seem quite happy to supply them to me and I get the oil from Halfords or the local motor factors. I use Castrol Magnatec 5w 30 oil and never had any problems. Jacking the car up high enough to get underneath can be fun. I have to drive mine up on wooden planks 2" thick then get two trolley jacks in the side behind the front wheels. There is a big bolt there that holds the sub frame in place and makes a perfect jacking point. I've never been a fan of jacking on the sills myself as they are quite easy to damage. Air filter is a simple clip in thing, I have changed the brake pads myself, nothing special there really and changed the spark plugs too, bit more involved but easy to do with fairly basic tools. I have changed both the drive belts too, (Aircon and alternator) as they were damaged. So far I haven't found anything I can't do myself or feel I need the dealer to do for me. If you need a guide on servicing or how to get access to something ask on here, sure we can help. Craig.

I've never encountered a car/van/truck which applies the brakes when exceeding the speed limiter, the limiter merely stops you from being able to accelerate.

Would imagine that the amount of air/fuel is being reduced rather than the brakes being applied.

It could be anything. I would not be surprised if a hose has been damaged or not reconnected properly, with the amount of work carried out. The car seems to have done a lot of miles and had a hard life in a short time. The clutch change expected for the mileage. The next item if not the hoses and connections is the water pump. Given the hard life, I would say that is due for a change. When the seals start to fail on a water pump, you get a small drip and then it evaporates very fast. The only time you can spot a leak is during warm up and cool down when the metals expand and contract. Since the engine has an under cover it is not as evident. Then there is the radiator. That could be damaged by a stone through the grill. I noticed how vulnerable the radiator is, and was thinking of installing a wire mesh. Hopefully the test will reveal the cause, and it is not the head gasket. Head gasket is normally rare for this engine, especially for a Valvematic engine. Don't use any stop leaks, if the actual source of the leak is discovered. I have noticed another reply mentioning the radiator as I was typing this.

Thank you to Devon Aygo the reprogram of the ECU has cured the problem and the car is a pleasure to drive again. best regards RobbM