MobileChicane

It has been a minute... Finally got access to the car at the weekend. Successfully got access to the spark plugs by using the air compressor trick to break the seal between the coil pack rubber boot and the spark plug isolator. Successfully changed the front pads and discs. Failed miserable in fault finding the cause of the overheating. The car has aircon and so does not have the separate thermoswitch I took a punt on. Oh well... All fuses (both in the passenger footwell and the engine bay by the battery) appeared to be fine. Ran out of time and so will have to go again at some point in the future.

Hello Pete, Noted re your last above. I have risked the £8.68 and ordered a radiator thermoswitch from ebay just as a precaution - livin' life on the edge!

Thanks Nigel - will ask for further diagnostic info. Parents are always to blame 😁 In his defence, son is automotively quite savvy. My mid-life crisis was a Caterham, which he helped me tinker with mechanically. He can pop the bonnet and knows what he is looking at with a reasonable level of detail. Tyre changing is not an issue, etc. Key reason I am involved is that he and his fiancé have a first-floor flat with assigned car parking spaces, but no real room to work on the car without potentially getting in other people's way and no power source anywhere near.

Yes, found a couple of threads on here which detail the fuses involved. Thanks again for your time, Pete. The details you provided re the thermostatic sensor for the rad fan have given me a great pointer.

In the 2013 model the MFD does not provide an option to display oil temperature, only coolant temperature. Have downloaded the owners manual to confirm this.

Partial response - sorry. Unclear to me if the rad fan is kicking in; I suspect that it is not. Unclear when I will get time with the car, but I think that the thermostatic sensor for the rad fan has to be my new prime suspect.

Thanks for the information you provided, Pete. I am informed that if stationary with the engine running then the temperature will rise - 115 has been seen. At that point the technique employed is to turn the cabin heater to max and try and dump heat into the car - fun times! No loss of coolant; level looks good in expansion sphere.

Thanks to you both for replying - Pete, I have responded to your message. Hello Nigel, as the car no longer lives here full time I am an unreliable source of information. As I understand it, the car overheats if stationary in traffic for an undefined period. The temperature as reported on the dash is via a selection in the LCD display; there is no old school gauge. I serviced the car (engine oil, oil filter, air filter, cabin filter, plugs) just prior to MOT in June, at which the sole advisory was brake disc wear. We had a visit from Sprog 1 this week, which is when the overheating was mentioned in passing. I had a brief look and oil and coolant levels are as they should be. No lights that I am aware of. When I can gain access to the car, will try my Torque app to see if I can read for codes.

Hello Pete, I have not made enough posts to be able to message you directly, and am reluctant to put VIN / REG in a public forum. If it provides sufficient info, the beast is a Citigo Sport, first registered date July 2013 V5 lists the "Variant" as ABCHYA, which I think identifies it as a 60HP manual, which indeed it is. Thanks for the info above re a thermoswitch. This has now moved to suspect No.1 in my list for my amateur diagnostics... 🙃

Hello Pete, thanks for the information - and the offer. Enjoy your drive 😉

Shameless bump of my own thread... Original Q: Is the temperature sensor providing the dash display the only temp sensor involved in the cooling system, so I can discount the temp sensor as a probable cause of overheating? Thanks.

Reasonably confident that the coolant is reasonably recent and to spec. Car was purchased new for my wife and then "gifted/nicked" by Sprog 1. That written, it may well be worth a renewal - but I don't think it is a cause of the current issues: expansion sphere looked suitably pink when I last looked a couple of days ago.

Hello, Son's 2013 manual is overheating - and apparently has been doing so for some time... kids. Q: The dash temperature readings appear to be accurate, starting cold and increasing as the engine warms up, reaching and maintaining an indicated 90 when moving. Is the temperature sensor providing the dash display the only temp sensor involved, so I can discount the temp sensor as a probable cause? Son no longer lives at home and so my access to car is limited. Thermostats, fan, relays and associated wiring have yet to be checked. All advice gratefully received.

My measurement: 109.49 mm Car is a 69 plate 1.5 SEL (with the word Skoda on the rear rather than a badge) registered in Feb of this year.

Had this on an intermittent basis in my previous Passat and once since acquiring the Karoq. Pressing and holding in the power button for quite a few seconds (cannot recall how long) performs a reboot and returned things to normal for me. Not ideal and been an issue for VAG for quite some time; it is a pity that the system cannot be made more robust