Radar Blocked, ABS/ESC, City Safe, Collision Warning faults

[Fitzy73]

Morning wise ones,

As you can see, I’m have the odd issuer with my 2014 D5 XC70.

The radar blocked message has been on for the 6/7 months I’ve owned it (FSM-C1A6797), but driving from Cornwall to London last week the ABS/ESC failure message appeared and is now permanently illuminated. After a nightmare 7+ hour journey, when parking, the gearbox (auto) jolted massively when going from reverse to drive (not done that since and will get the oil changed).

Then on the way home, City Safe and Collision Warning also need servicing, Hill Decent doesn’t work either oh, and just for good measure the bonnet doesn’t open.

Lots of codes, which I hope the main one is left rear wheel sensor failed and this should solve several problems (BCM-C003707).

Other codes are:

CEM-B11D453 Low Speed Collision Mitigation by braking disabled.

CVM-U041568 Invalid data from Brake Control Module.

CVM-U300066 Control Module algorithm failures signal has too many transitions.

I’m sure that will give the garage enough to keep them busy, but just wondered if anyone has any thoughts please.

Many thanks

[TeamG]

Any battery charge/charging issues? Many fault codes can show as a result.

Also, have a good check for water ingress/damage behind the dash/above the footwells. Numerous simultaneous faults occurring are unlikely and these are likely to be linked.

[Sotosound]

My wife's 2015 V60 displayed a vast array of warning messages when an ABS sensor got damaged.

Once the sensor was replaced, the error messages all disappeared.

This doesn't give a favourable impression of Volvo's testing of their software, most notably in terms of integration testing to establish how well everything works in concert.

[SwissXC90]

All of the systems you mentioned need wheel speed signals.

You have a faulty wheel speed sensor.

Start there.

[Fitzy73]

Thanks very much everyone.

I’m hoping the wheel speed sensor will sort most things out.

The battery is a good shout as well. I have checked several times for damp/wet carpets etc, but all seems dry.

[Fitzy73]

Following on from this post, I now have a bit of an update.

After a visit to my local independent, we had two hours of labour just to open the bonnet, so not the best start.

Gearbox and rear axle oil changed, so fingers crossed that will solve the clonking issue, although they commented the gearbox oil looked especially bad.

Overboost error also picked up, but after a smoke test, seems it’s just a faulty MAP sensor (not that I have resorted to Google yet to find out the cost).

So it will be back next week when the parts are in for a new bonnet catch and cable, the wheel speed sensor and the MAP sensor.

Turbo pipes were also noted to be soft.

As for the radar blocked message, he just said let’s sort out the other problems first, which sounds ominous!

[passenger]

Hope so they know correct way to refill/extract diff oil. Not many independent mechs knows about extracting oil from diff after few minutes driving.

Extract how much is possible
Refill until leaks out
Drive few mins
Refill until leaks out
Depends on your diff, xxx ml extract.

For mine diff VIDA says 100ml from diff

[Fitzy73]

Oh, something else for me to worry about.

Although, it did about 15 miles while they had it, so it went somewhere at least.

Thanks for the explanation though.

[Luking]

Hello, did you fix your problem? Was the speed sensor a problem? Thank you

[Fitzy73]

Unfortunately, the problem remains an auto electrician has spent quite a while working on that and a few other problems, but no luck so far.

Currently waiting on him getting back to me after he’s tried to research it further.