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Total Likes: 4
Original Post (Thread Starter)
#845866 07/01/2026 10:44 PM
by MOG42
MOG42
Are there any “high mileage” cars out there - anyone have any coolant leaks or issues that the B48 is famous for as time and miles move on?
Liked Replies
#845869 Jul 2nd a 06:00 AM
by CLPlusFour
CLPlusFour
I now have 48,000 km on the odometer. I wouldn't exactly call that “high mileage.” So far, I haven't had any problems with the B48 engine.
1 member likes this
#846717 Jul 20th a 09:03 AM
by JohnHarris
JohnHarris
AI suggests the following

An ABS warning light on a 2021 Morgan Plus Four is most commonly triggered by a dirty or faulty wheel speed sensor, low brake fluid, a blown ABS fuse, or a wiring issue.

Because these cars use a modern BMW powertrain and electronics, the system can also log an error due to a dying battery or a faulty brake light switch.
Common Causes and Checks

Wheel Speed Sensors:
These are located at each wheel hub and monitor rotation. Because Morgan Plus Fours are open-wheel style and sit close to the road, dirt, mud, and road debris can easily foul a sensor or its wire, breaking the signal to the ABS control module.

Brake Fluid Reservoir:

Check your brake fluid level. If the fluid is low (often due to worn brake pads or a slight leak), the system may disable the ABS and illuminate the light

.Fuses and Relays:

A blown fuse or a faulty relay can cut power to the ABS pump or module.

Battery/Voltage Fluctuations:

Modern Morgans utilize sensitive electronics. If your battery voltage drops too low during starting, it can trigger an ABS or stability control warning code.

Brake Light Switch

: If the switch behind your brake pedal fails, it can confuse the ABS/traction control module, causing the warning light to turn on.

What to Do Next

Check for debris: Look behind your wheels and gently clean off the speed sensors and their wiring. Check for loose connections.Verify fluid levels: Ensure your brake fluid is at the correct level.Use an OBD2 Scanner: Because of the shared BMW electronics platform, you can often retrieve specific ABS fault codes by plugging an OBD2 scan tool into the port located under the dashboard. This will pinpoint exactly which sensor or valve is causing the issue

.
1 member likes this
#846934 Jul 23rd a 07:15 AM
by JohnHarris
JohnHarris
One thing I love about Morgans is in their consistency over different models and different platform types, in their ability to get the basics like the earthing wrong. Maybe someone needs to put up a educational poster in the design/engineering room....

''Everything works better with a good earth''.

The other consistent element is very few Morgans like to hibernate.
1 member likes this
#846952 Jul 23rd a 10:54 AM
by Davetherave
Davetherave
Our Plus Six has covered just shy of 11K miles, not that many over 5.5 years, but we use it mainly in Europe through the summer, our West Country road ( track) is terrible in winter, so mainly use our 4x4. ( our Plus Six exhaust is very well dented!! ).
With regard to the radiators I think the one fitted is either No 4 or 5, lost track to be honest, most have lasted 1 year to 18months. The last one failed 14 months ago and after the latest software update. It failed 2 weeks prior to last years long tour of France, I talked to the factory and Williams about our situation and to be fair the factory pulled out the stops for us, as did Williams and they fitted a replacement quickly. I believe the radiator was replaced with the latest design that is meant to stop the issue, I know at the time they only had a few ready to go. They covered it under warranty as the previous radiator had only been in the car 14 months.

Ref other failures.. best described as lots.. and most mentioned on TM at one time or another. Most fixed by the factory under warranty or Williams, since end of warranty I have undertaken repairs that I can do..

It appears that the earlier Plus Six cars showed a fair amount of areas needing attention.. All were fixable issues. Most covered in warranty, but Morgan learnt from this and corrected areas in each MY build.. similar for the Plus Four. An early Plus Six or Four is just as good as later ones.. if they have been worked through.. Later cars have the benefit of the early car R+D by owners and factory changes, so seem to be more reliable.. Its a similar pattern in most manufacturer models, just shows a bit more with Morgan. In addition the factory has made efforts to improve overall QC in build.. We attended factory tours in 2020 and this year, the factory now seems a lot more united and dare I say it professional.
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