Vauxhall Astra Bertone 2001- service light is flashing and car won't start but leave it for an hour and the light stops flashing and car will then start. No diagnostic computers detecting the problem. What could it be ???? Paul.

Lots of problems with those roofs. Take it back to the place that fixed it and tell them to fix it properly. Probably air in the hydraulics.

https://www.google.com/search?q=Opel+Astra+Bertone.+Message+%27too+slow%27+appears+when+trying+to+open+roof

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ASTRA ANTILOCK BRAKE SYSTEM (ABS)
The Vauxhall Astra ABS warning light will illuminate yellow for a few seconds after the ignition has been started to self-check. The system will be operational when the light extinguishes. If the ABS light does not extinguish after starting the car or comes on whilst driving, this signifies a fault with the ABS system. Brakes will still operate although stability may be compromised on certain road surfaces. Take it to your mechanic to see if it needs to be serviced.

Code 95 on your 2010 Vauxhall Astra Life points towards a fault with the airbags; in other words, your airbags require servicing. To know more about the codeson your car and what they mean, follow this link: https://www.drivingtesttips.biz/vauxhall-astra-dashboard-engine-warning-lights-meanings/fault-codes.html

See this thread:
Disable car immobilizer for vauxhall astra

Disable car immobilizer for vauxhall astra

Disable car immobilizer for vauxhall astra

You have an engine cylinder misfiring, run a fault code test with a scanner to see what cylinder is misfiring. Misfire codes look like this P0301 is cylinder number (last digit of fault code) one and so on.

It is located on the outside of the transmission I think.

could be airflow meter fault or throttle potentiometer should see check engine light flashing if either of these sensors are bad, they can effect idle and engine performance.

as this a uk car the easiest way to diagnose the problem is to take it into quickfit for a diagnostic check(cost a little,but infinately easier.)and if you want them to fix any problem you cant handle its already in thier workshop(last time i did this was on an astra estate 1.6 petrol,problem was down to faulty exhaust sensor saved me hours of "fun"cost me £38 total.....)

run scanner for trouble codes