Proceed as follows to rectify the problem: Check/correct the coolant level. If the coolant level sensor float (drawing, pos. 2) in the expansion tank is at the same level as the coolant, the sensor may be assumed to be defective. Replace the sensor. If the coolant level sensor float is submerged or the float is below the coolant level, the Hi. My Astra 2011 (manual, non-turbo) has a couple of issues: Engine light stays on, Idling revs fluctuate from normal sub 1000 rpm, up to 2000 and even 3000+ rpm by itself, Clapping sound on pull If the light stays on you might have to do a reset on the tyre pressure warning system, there is a different procedure for each vehicle so you will need the owners manual to find out how this is done but is normally a straight forward procedure with no special equipment required. Ensure all four tyres are the correct pressure before resetting SOURCE: rear hatch door won't lock dash light showing. You need to tighten the lock mech on the boot lid. this will close the boot just enough more to turn the light on. It's no biggy, you might need a star driver depending on bolt head. move it into the boot lid approx 4mm to start. then 1mm until 10mm. if no joy then it may be the sensor. All My 2002 Opel holden astra ts 1.8 has started stalling while driving can be going slow or fast motor cuts out like you switched it off, no warning no coughing ,just stops ,can be on straight stretch of road,doesnt matter where it is.Pull over and sometimes it will restart and drive off other times you have to sit for awhile before it will start.All instrument lights come on at first ,then go Consider to support my channel and all the hard work put into it at http://www.patreon.com/LMAutoRepairsThank youHiThis car came to me few months after I had Vauxhall Astra airbag warning light comes on RED when you switched the ignition and soon its goes off after few seconds after engine start. If airbag light not turn on and not go off after few seconds it means it has problem with airbag system. If Vauxhall Astra airbag warning light illuminates YELLOW for 60 seconds after ignition it means 1. Check Engine Light appearing on the dashboard. A bad mass air flow sensor will usually trigger a check engine light. This is because the ECU will detect an out of range value coming from the MAF sensor and the check engine light is its way of letting you know that something is wrong. 2. An engine that is difficult to start P1YWct5.

opel astra engine light stays on