So there are two issues with the appliance:
1. Dryer Timer is stuck so the clockwork will need replacement.
2. Its heating however, not drying so one of the thermostat is faulty and will need replacement (likely the part shown in image below).
Please check this IMAGE.
Part#16589 is the thermostat (temperature regulator) and Part#181431 is the clockwork that will need replacement.
The cost of repair will be around £130 for parts + repair charges.
If you are willing to repair it yourself, you will have to unplug it and remove the top of the appliance.
Then access the parts to replace.
You may contact Bosch at 0344(###) ###-####to book repair.
If you have any further questions, don't hesitate to ask!
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