So it's finally cooling down here and my heat is not working with the regular CCU. The only way I can get heat to come through is with defrost setting, the spin dial, even when spun all the way to heat and let it click to max, just blows ambient.

What's the best choice here? Just hope an eBay replacement works or does anybody rebuild these?

Anything else to check?

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I worked on quite a few. I'd be happy to take a look. I think I've got a few units in my closet too if we can't get your up and running.

Drop me an email (JamesDean59@gmail.com) if interested.

--Kris

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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

My first step would be to unplug the auxiliary water pump. When the aux pump goes bad, it's a dead short and throws an automatic circuit breaker inside the head unit. If you disconnect it and the heat comes back, replace the pump.

Kris has a stack of PBUs of mine at the moment!

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]