Faulty Mahle system

Haydn

Just Joined
May 17, 2025
1
0
My Bianchi Impulso e - road bike has developed a fault, after a full mechanical service and firmware update. The Mahle X35 motor no longer engages. The bike has been fault free for over 3 years, accumulating more than 8000 miles. The mechanic reckons its not a firmware problem but some physical/electronic component fault. He's replaced an electronic pass sensor and the i - woc system to no avail. He now reckons it might be the battery, but the Pulsar One display shows a healthy range. The bike's been out of action for over a month, now. I've now taken it to another bike shop. Any ideas? Was the bike damaged during its service?
Meanwhile, I've bought a Basso Vega e - gravel bike. It's a superb machine!
For over 40 years I've ridden conventional road bikes and joined the ebike revolution about 4 years ago, when I purchased a Cannondale e - road bike. (I occasionally still ride unplugged!!).
 

soundwave

Esteemed Pedelecer
May 23, 2015
17,825
6,709

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,437
3,842
Telford
My Bianchi Impulso e - road bike has developed a fault, after a full mechanical service and firmware update. The Mahle X35 motor no longer engages. The bike has been fault free for over 3 years, accumulating more than 8000 miles. The mechanic reckons its not a firmware problem but some physical/electronic component fault. He's replaced an electronic pass sensor and the i - woc system to no avail. He now reckons it might be the battery, but the Pulsar One display shows a healthy range. The bike's been out of action for over a month, now. I've now taken it to another bike shop. Any ideas? Was the bike damaged during its service?
Meanwhile, I've bought a Basso Vega e - gravel bike. It's a superb machine!
For over 40 years I've ridden conventional road bikes and joined the ebike revolution about 4 years ago, when I purchased a Cannondale e - road bike. (I occasionally still ride unplugged!!).
Can you explain a bit more: Was it fully working when you took it in for service, then not working when you went to collect it?

Why did you take it in for service, when there's nothing serviceable in it?