Thor Motor Coach GEMINI problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
6 owner complaints analyzed
8 distinct recall campaigns
4,739 mi median reported failure mileage
Scope: 2016 to 2023 model years. Data updated: . 2 complaints include usable failure mileage. View data status.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Owner-reported patterns
Most common problems
Electrical System is the most frequently named component, appearing in 1 of 6 complaints (16.7%). A complaint can name multiple components.
Recurring terms in complaint narratives
Topic
Matching reports
Share of complaints
Braking behavior
3
50.0%
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
Electrical System
1
Electrical System: Integrated Trailer Brake Control
1
Electronic Stability Control (Esc)
1
Equipment
1
Forward Collision Avoidance: Warnings
1
Lane Departure: Warning
1
Service Brakes
1
Structure
1
Component breakdown data
Category
Count
Electrical System
1
Electrical System: Integrated Trailer Brake Control
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
Under 25,000
2
25,000 to 49,999
0
50,000 to 74,999
0
75,000 to 99,999
0
100,000 to 149,999
0
150,000 and above
0
Reported problems by failure mileage data
Category
Count
Under 25,000
2
25,000 to 49,999
0
50,000 to 74,999
0
75,000 to 99,999
0
100,000 to 149,999
0
150,000 and above
0
Under 25,000: 2; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (2). 4 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
2020
1
2021
1
2023
2
2025
2
Complaints over time data
Category
Count
2020
1
2021
1
2023
2
2025
2
2020: 1; 2021: 1; 2023: 2; 2025: 2
Pattern summary
Electrical System leads the component reports. Braking behavior appears in 3 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
THE REAR SPEED SENSOR ON MY 2018 THOR GEMINI RV WITH THE MERCEDES BENZ 3500 SPRINTER CHASSIS WENT BAD KNOCKING OUT MY ABS, STABILITY CONTROL AND CRUISE CONTROL ON A LONG TRIP. I WAS ON THE HIGHWAY DOING A STEADY 60-65 MPH. MY SPRINTER ONLY HAS 8,000 MILES ON IT. I'VE READ THIS IS A RECURRING PROBLEM ON THESE VEHICLES SO I THOUGHT I WOULD REPORT IT.
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
6 unique complaints in this selection. Analysis snapshot: 2026-10-01.
33.3%Usable mileage2 / 6 records
100.0%Valid incident date6 / 6 records
100.0%Valid filing date6 / 6 records
100.0%Ordered incident and filing dates6 / 6 records
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
Component complaint heatmap
Component
2016
2017
2018
2020
2021
2022
2023
Electrical System
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
00.0%
No examples available for this selection.
150.0%ODI 11648320 · 1,478 mi
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Electrical System: Integrated Trailer Brake Control
0Unavailable
No examples available for this selection.
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
0Unavailable
No examples available for this selection.
00.0%
No examples available for this selection.
1100.0%ODI 11642018
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
THE REAR SPEED SENSOR ON MY 2018 THOR GEMINI RV WITH THE MERCEDES BENZ 3500 SPRINTER CHASSIS WENT BAD KNOCKING OUT MY ABS, STABILITY CONTROL AND CRUISE CONTROL ON A LONG TRIP. I WAS ON THE HIGHWAY DOING A STEADY 60-65 MPH. MY SPRINTER ONLY HAS 8,000 MILES ON IT. I'VE READ THIS IS A RECURRING PROBLEM ON THESE VEHICLES SO I THOUGHT I WOULD REPORT IT.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Purchased October 8 2022. Vehicle is a 2023 Thor Gemini 24KB on a 2022 Ford chassis. Vehicle has been in for repair of these items for over 30 days. Vehicle warning light notifications - Antilock Brake Fault Hill Start Assist Warning Pre-collision Assist Not Available Adaptive Cruise Control Not Available All Wheel Drive Not Available. It was viewed by Ford technicians. It is stated by Ford technicians the vehicle is not safe to operate. Problem first appeared November 2022.
Purchased October 8 2022. Vehicle is a 2023 Thor Gemini 24KB on a 2022 Ford chassis. Vehicle has been in for repair of these items for over 30 days. Vehicle warning light notifications - Antilock Brake Fault Hill Start Assist Warning Pre-collision Assist Not Available Adaptive Cruise Control Not Available All Wheel Drive Not Available. It was viewed by Ford technicians. It is stated by Ford technicians the vehicle is not safe to operate. Problem first appeared November 2022.
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
Component failure mileage distribution
Component
Mileage range (25th–75th percentile)
Median
Usable records
Examples
Electrical System
Too few reports for a range
1,478 mi
1 (sparse)
ODI 11648320 · 1,478 mi
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
THE REAR SPEED SENSOR ON MY 2018 THOR GEMINI RV WITH THE MERCEDES BENZ 3500 SPRINTER CHASSIS WENT BAD KNOCKING OUT MY ABS, STABILITY CONTROL AND CRUISE CONTROL ON A LONG TRIP. I WAS ON THE HIGHWAY DOING A STEADY 60-65 MPH. MY SPRINTER ONLY HAS 8,000 MILES ON IT. I'VE READ THIS IS A RECURRING PROBLEM ON THESE VEHICLES SO I THOUGHT I WOULD REPORT IT.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2022: 0 complaints · 2023: 0 complaints
Equal observation windows
Model year
Through age 0
Through age 1
Through age 2
2022
0
0
0
2023
0
0
0
Date coverage across each selected cohort
Date basis for all complaints in selected model years
Year
Incident dates used
Filing date fallbacks
Excluded dates
2022
1
0
0
2023
0
0
2
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
Component co-occurrence matrix
Component
Electrical System
Electrical System: Integrated Trailer Brake Control
Electronic Stability Control (Esc)
Equipment
Forward Collision Avoidance: Warnings
Lane Departure: Warning
Service Brakes
Structure
Electrical System
—
0
0
1ODI 11648320 · 1,478 mi
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Electrical System: Integrated Trailer Brake Control
0
—
0
0
0
0
1ODI 11642018
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Purchased October 8 2022. Vehicle is a 2023 Thor Gemini 24KB on a 2022 Ford chassis. Vehicle has been in for repair of these items for over 30 days. Vehicle warning light notifications - Antilock Brake Fault Hill Start Assist Warning Pre-collision Assist Not Available Adaptive Cruise Control Not Available All Wheel Drive Not Available. It was viewed by Ford technicians. It is stated by Ford technicians the vehicle is not safe to operate. Problem first appeared November 2022.
Purchased October 8 2022. Vehicle is a 2023 Thor Gemini 24KB on a 2022 Ford chassis. Vehicle has been in for repair of these items for over 30 days. Vehicle warning light notifications - Antilock Brake Fault Hill Start Assist Warning Pre-collision Assist Not Available Adaptive Cruise Control Not Available All Wheel Drive Not Available. It was viewed by Ford technicians. It is stated by Ford technicians the vehicle is not safe to operate. Problem first appeared November 2022.
This brake controller seems to apply full brakes regardless of the settings within the app. I have reinstalled it several times as directed by the manufacturere and each time I get on the road and just barely touch the brakes it locks the trailer brakes. This is dangerous since there is no way to test the system without driving.
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
The contact owns a 2023 Thor Motor Coach Gemini. The contact stated that the wire connecting the solenoid to the generator was burned. The solenoid was making a cranking sound while turned off. The contact stated that the head bolts had fractured and detached on the side awning rails on both sides. The skylight window was leaking water into the cabin of the camper. The contact stated that there was a warning informing the contact that the motorhome was due for an oil change that occurred earlier than expected. The contact received notification …
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
1 patterns with matching reports.
Warning lights and dashboard alerts
1 mentions · 16.7% of complaints
Median mileage: Unavailable (0 usable records).
ODI 11503404
Purchased October 8 2022. Vehicle is a 2023 Thor Gemini 24KB on a 2022 Ford chassis. Vehicle has been in for repair of these items for over 30 days. Vehicle warning light notifications - Antilock Brake Fault Hill Start Assist Warning Pre-collision Assist Not Available Adaptive Cruise Control Not Available All Wheel Drive Not Available. It was viewed by Ford technicians. It is stated by Ford technicians the vehicle is not safe to operate. Problem first appeared November 2022.